Here’s the thing... I personally take the opinions of PF/KB relationship with a grain of salt. She moved from her family/hometown to a place where she (as far as it sounds) did not know many people, if anyone at all. It is quite easy for a young woman to become isolated in this scenario, especially when she is busy with a baby & career. She may say/do whatever to keep up appearances and prevent family from worrying about her.
This is strictly my opinion, but I’ve had female friends fall into bad relationships, and I’ve been there. It can creep up and catch you off guard, especially when you’re used to being an independent, strong, “I can handle things on my own” type of young lady. Controlling boyfriends often cut you off from family, friends, activities, etc. They force you to depend on them, and it can be a deep pit to crawl out from. I have no idea if that behavior could be a factor here, but the more a lack of friends/connections seems to be apparent, the more it does give me pause.