I think everyone feels a little lost after doing something for 8 years. It's a routine and then one day it ends. I imagine it's even harder when you're 12 and that thing has been your whole life.
I'm glad that it sounds like she is well adjusted. I hope we hear more about child stars that had her experience. So often we hear the horror side, a side that is hopefully on the decline and gone.
I don't expect child acting to go away anytime soon. I think for some it is likely a benefit. But it's clear that a safe environment and attentive parents are a requirement.