You will cry iridescent tears.

You will know love and you will know pain.

You will know loss all too well.

I dunno how this girl would end up hanging out with the tadfools but I adore her and I rotate her in my head constantly so here we go.

Everyone in the BG3 party except Minthara has prominent scars, and I suspect being around that would help Alicia accept her own appearance. Wyll in particular should be good for her to talk to.

She can bond with at least half of them over having a weird love/hate relationship with toxic dysfunctional family.

It would probably take her a while to comfortable around Karlach, what with the whole Constantly On Fire thing, plus Karlach's very extroverted and exuberant and Alicia is...not.

The fact that Volo just happens to be carrying around a fully functional magic prosthetic eye is very convenient.

Fencing buddies with Wyll?

She's not as nihilistic as Verso but she's still vulnerable to Shar's influence, though I think she has a much better chance of resisting it than her brother who is basically guaranteed to convert.

I'm not sure to what extent magical healing could help with her disabilities. Original Alicia could benefit a lot, but Painted Alicia isn't "injured", she's technically completely intact. There's gotta be some way to at least give her an artificial voice if she wants it though, plus better options for pain management.

Moving to Faerûn would be basically perfect for all the Painted Dessendres (at least the ones that steer clear of Shar) because it gives them a chance to start fresh in a place where the Dessendre legacy means nothing and Aline has no power over them. I'm not sure what Alicia might decide to do with her life but my first thought is that she could become a wandering hero like Wyll was. I doubt she'll want much to do with any of the gods but I'd like to think she'll eventually find one to at least pay lip service to so she doesn't end up Faithless.