Even though I think she could try harder to integrate, it’s clear they just want her gone at this point which doesn’t make it any easier. She never even mentions going back, but they constantly jump to that whenever there’s a problem rather than trying to find a solution. They seemed to really embrace her with the wedding and all but either it was for all for show or she’s really worn her welcome. TJ looks so fed up but that’s what he gets for deceiving her honestly.
from my personal experience, I would imagine that if she had a therapist, they may not be trauma-trained, particularly in cptsd which given the little we do know about her history and what she said, may be necessary (obvi this is a jump, on my part and I’m not qualified to diagnose but can speak based on the similarities I see in my experience versus hers). it can take years to understand how childhood trauma may shape your interactions with anyone, not just family, when you’re an adult and even moreso difficult to acknowledge to yourself that you’re not “over it.”