You know, i'd much prefer it if she was just a regular follower of Shar who gets her memory wiped after every mission because Shar. I just think it'd be more interesting if she was just a kid who fell in with the wrong crowd (her background is urchin) and spiraled from there.
But then again, that's not very snowflake so yeah, it's pretty likely she'll join the Chosen gang alongside Gale and Karlach. Gotta wonder if any of the writers noticed trend.