AS-man, youre pretty much right on all accounts. I dont think she is ready to actually "grow up"and deal with the realities of everyday life for a regular adult (career, responsibility, taking care of home and marriage)
As far as support I pretty much do just what you mentioned. I make it to every meet I can and support her as much as possible. I missed her last one because of a mandatory function but I'm sure she used that as an opportunity to tell her coaches (the people shes most likely staying with) about how I'm unsupportive and dont believe or support her.
I feel like thats exactly whats going on. Shes not happy with her career (or lack of one) and where shes at athletically. I definitely feel like the scapegoat