Carkal's ward and pseudo-adopted by the Corveds, they met the child during a Vein incident that they'd been Summoned to and had to lead them back home. They'd bonded over sign language and shared preference for peaceful quiet. Shaena has sort-of adopted the little boy as a trusted figure and helped him with things regarding being Lost and clinging magicks. She was the second/third to find out about the NutcrackerBot companion he'd had and made sure to teach him the tips and tricks to getting out of a fight he didn't want to be in. Carkal may have caught them more than once during these times and left them at it, Kanae was a lot less fun.

One of the wards posted outside the clan, and honorary Warden with his work in aiding the Lost. They'd met when Shae was assigned to assist in laying out protection for the orphanage Des works in, continuing to lend a hand when in the area. They'd grown to be friends during that time and had been introduced to the Mysfits of through him, settling into the new assignment under his guidance.
Des was a non-combatant when handling Mysfit cases and Vein-brought chaos, tipping the Warden on where they're most needed on the job. He's part of the informally-known 'Neon Squad' as Psyckinect(tentative), and though she wasn't an official Mysfit he brought Shae along whenever they did their runs, if she wasn't already patrolling on her own.
Oddly enough, when Shae first met Des, they thought they'd met each other before. They weren't sure what it was, but brushing against his aura gave her a sense of strange familiarity, but otherwise had no real lead for it.

An accidental letter sent through the Rift resulted in two lives finding unlikely companionship. While being unable to help with initial book request, Shae wrote back and forth in other matters, often of the little things with the (at the time unknown) otherworlder. Sean brought on her interest in plants and influenced a mini-garden as well as trading origami flowers as a 'game' between them. They'd grown enough to use little pennames, Sean being 'Bell' and Shaena adopting 'Leo' after being likened to a cat in some of her stories.
Neither would know one another's true faces for a while until an unlikely common point would make it happen.

One of her few friends in school, and one of the first people she'd helped officially as a Curse Breaker. She'd detected the curse and approached, and despite the initial hesitance, had managed to successfully remove the curse over the course of a short time and had stayed in contact since.

Another acquaintance from school with a penchant for chaos and fluffy things, dubbed 'Bunny' by the Alter which leaked to her. She didn't know this one as well as Musa, having met through her initially after starting treatment on the other's curse, but was very quickly swept into her social circle and bunny-related shenanigans. Shae didn't find out about Yuki's affiliation with Hex until she'd dragged him into the scene too, learning firsthand how much more chaos is had when both of them are in the same room.
Shae'd been wary of her after finding out Hex's clan affiliation, more than ready to distance about the same, but after observing & awkward conversations she's found that Luna's judgement of people could be... trusted. As chaotic as she was the Rabbit Mage didn't make acquaintance with just anyone, and while she definitely has words about certain scenes, Shae has never felt reason to fully cut her off. This is one of the only reasons Shae continues to associate with Luna, the other being Musa's and Kanae's judgements of no harm.

The second head of the Neon Squad known, alias Firecracker. Hestia was the main guide in (city)'s territory, knowing the scape day & night like the back of her hand. She's got the connections if one were to need them, and Shae has gotten to use these connections whenever one were to look for her specific brand of services.
Hestia is Desmond's friend and initially didn't warm to Shae due to being affiliated in a mage clan, not having the best experience with them. There was no disrespect thrown between them so the two worked amicably for a time before the ice was broken. It helped seeing each other in action and her persistent need to protect those within the group by means available. They swapped tips and dogpiled Des when they suspect he'd been going beyond his limits.

Shae had been going to therapy for the Vein Falls already, and then for Mercen's emergence, so Dr. Evans was just her most recent assigned since after highschool. He's recommended as one of the go-to's for the Wardens, so he's no stranger to the kind of things they've brought to his chair. These days they go more to let off steam compared to before, or if there are some things they can't really bring to the family just yet.
Believe it or not, Mercen is more mindful of making sure they make it to appointments on time, especially when they're fronting.

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An acquaintance/friend turned enemy/rival, Hex's affiliation with the Numbrage clan set the tone for their future interactions. Shaena's grudge still simmered after the betrayal and encounters made her wary of his intentions. In turn, the mage made a menace of himself and initiated this song & dance of theirs to varying results, none of which included his capture. Even so, there's a begrudging respect between them due to past association, both having somehow maintained the pacts they've made since. Shaena is still one of the few people that Hex has trusted to use his real name in normal settings.
As much as he infuriates her, Shae can't find herself to deny help as a CurseBreaker, knowing her presence soothes the Snake as much as it does. Even then she's tried to avoid confronting it directly, knowing what an enemy to the Snake looks like and not at all keen on finding out what it might do without the human side tempering it. On the plus side, the exchange seems to allow a slightly less hassling mission completion, even if the CurseEating happens during most of their physical clashes than not.
Shae won't lie, she misses the friendship, but her need to keep her own safe has her Masking most feelings again. They's're only made more complex given their shared social circle & the general air he holds outside of Missions. Until she gets answers from Hex she just can't let her guard down, especially since Mercen hasn't really initiated contact to him whenever they've fronted, as far as she's aware.
The two of them were due for a long, long talk when she's able to corner him properly.

Thext

A highschool bully, nothing more. A constant annoyance to her time then, and continuing to do so whenever they run into each other. Shaena gave no fucks to the girl's petty arguments and attempts to unbalance her, not rising to any of the attacks against her character. The only thing that made her memorable in the Warden's eyes was that incident involving a shoelace; while the girl didn't manage to scare/choke her out like she'd intended, Mercen took it as a threat to their life and hammered home that they could do far more damage if they'd wished it.
The stupid things one would do over a boy.
After that, any time they see each other it's met with apathy and heckling from their respective persons. Shaena continued to cold-shoulder Becky and won't actively go out of their way to interact with her. Becky would continue to antagonize her, but knew well enough at that point that Shaena can and will throw down if ever pushed like that again. She just doesn't know the extent of just what kind of lion bear she's poking, and Shaena was happy enough to leave her in the dark.

An odd creature she'd encountered within the Veins, from Drifting or Falling. Clearly a Voidling/Stelling taking shape of a cat, though instinct tells her to be cautious with the creature despite friendly interaction. That aside, they can't help but be mildly peeved as the creature snatches food as it pleases (hence the name she'd given it) and leads her along the Vein's Scape willy-nilly. Still, it was a very lonely thing and it always seemed to delight in her presence, and she does indulge its munchie-cravings when she can, hence her finding out its preference for chicken nuggets. Sometimes they'd bring her 'food' in the form of something to restore magic capacity, though they're not entirely sure why they do this knowing the other creature had a larger need for it.

The most unexpected encounter when they'd gone to meet with the Mysfits. Gale was with the group as part of the search party and secondary combat if and ONLY if it's needed. A dragon draws a lot of attention after all, especially one of the Elders' descendants that Stellings have taken to accompanying.
These two are not as close as some of the other Mysfits, but they are amicable enough to work together. Evidently the dragon finds their aura too hungry for their liking, moreso for the Stellings' sake than his,but he leaves her alone in a mutual understanding.

Introduced to her during a Hex encounter. While still suspicious of the mage, the snake was quite friendly and more than willing to slither up for attention. It was very happy to be heard and gave the Warden full permission to handle it whenever they'd encounter each other again. Shaena was happy to see it healthy and happy despite current company, and she'd made sure to put a word down to Hex if she found out he'd been lacking in care. In turn, she'd asked Vex to keep an eye on the mage's status as is and as the Snake.

Bunny's mage familiars, also known to them as the Daycycle Buns. While amicable with their master, it doesn't stop the more mischievous of the bunnies (Jelly) from trying their luck being chaotic with everyone they encounter, Shae included. Unlike certain persons, Shae has a touch more patience with the rabbits and has actually watched them for a time as a favor for the Rabbit Mage.
Suffice to say they've gotten used to each other enough that the bunnies respond to basic commands from the Warden, though not all the time.