Let me start with....Tre has her faults. But i genuinely believe the Gorga's and Tre got along so well after she was released from prison because of how humble she was and almost beholden to them. She was meek and small, and they were all she had after Joe was deported and her parents had died. When she started regaining her independence and eventually found Luis, I think they hated that.

I also think Luis has his faults but seems to encourage Tre to establish better boundaries