She lives inside of Stephanie's mind, Patient and alone waiting for the time she decides she's too bored waiting for someone to talk to. Luckily that doesn't happen since she has four pet cats and a "stray" dog to listen to, talking to them casually while Stephanie isn't focused on her. She is quite a destructive being, able to possess a body without any trouble. It is possible for Stephanie to work with Vlarise for ultimate power but they argue a lot and it might be somewhat difficult. The two have known each other for 10 years... When Clementine was born it gave a shadow entity a signal that a very powerful soul was born nearby, they went to check it out but instead of possessing the body with the powerful soul, they decided to possess the body of the older sister. It would be a safer vessel to stay in while the strong soul grew up. They'd just possess them later in life. The shadow took the name of Vlarise as their own and took the form of the older sister. Now, of course, the shadow ended up getting attached to the vessel they're in now... It goes against her plans but it still works out, since the vessel's soul is also quite strong.  Now Vlarise is settled inside of Stephanie's mind, promising that as long as Stephanie comes by ever so often to talk with her and keep her occupied that she won't take over her body.  Vlarises power is strong but not limitless, she can destroy an entire family within a day but if the vessels owner is determined enough to keep her contained she won't be able to make the body move. She can destroy a city in hours but if someone holds her down she can't do a single thing. It's complicated how to rank her powers, but at least it's better than her being an edgy sue.