Yes, yes I think that works. Amber's been in a blended family since she was twelve; this is her step-brother and step-father. Her mom's family got shady over the whole thing, and Amber's biological father's family is pure white trash. So it could be that Aliandra's host was on Amber's mom's side. Still occasionally keeping touch via Facebook and whatnot until she was taken over.
I'll say her name waaaas..... Rebecca. Sound good?