Doe

Doe is... incredibly pure. 

She's a changeling, so you can draw her in other forms too, and this is fine!

Celestial Warlock v Lore Bard multiclass, and her party's healer. Her warlock patron is a unicorn.
Her sacred flame is a giant pillar of rainbows
Her eldritch blast is a beam of rainbows with butterflies around it.
When she is high enough level, she will learn the spell Healing Spirit, and summon a pink unicorn that heals wounds.
Her Feather Fall spell summons a carpet of butterflies.
Her vicious mockery consists of insults like "pimbling spimterwick" and "wibbling qualbelly" and "twiddling nimblehock"
Her bardic inspiration is her complimenting people.
Her tome as a warlock is a pastel pink diary with a blue unicorn on the front. The back of this book contains a series of her drawings. The pages with spells and rituals in also contain her drawings. She draws random pretty things whenever
She uses illusions to help her companions deal with stressful situations, like turning swords into lollipops.
She has 20 days' of rations on her. They are all sweets and candy and cupcakes and strawberries.
She thinks she is vegan but she does not know cakes contain eggs. She's a little sheltered.
What a good bean
Also, yes, her spellcasting focus is a crystal she carved to look like a unicorn horn.

Prince Mango (https://toyhou.se/6373459.prince-mango-blossomdreams) is her familiar, from the wizard spell, rather than as a warlock familiar.