Hi there Thanes
Welcome!
I'm really sad to hear about your troubles. My eldest DS26 has caused a lot of problems to my relationship with my H. It's so important to be singing from the same song sheet but it's hard to actually understand what that looks like through the confusion and emotional turmoil we found ourselves in.
Has anyone else been accused of having an affair with the child that is the current scapegoat? Is it possible I am guilty? or am I being punished for not being my wife's flying monkey and not pushing away and rejecting my daughter?
I've actually wondered myself why I put my DS and his problems above everything else in our lives. I did this for years. I've learnt that my mistake was putting more effort in than my DS was into his life. Also, my H was not only exasperated with my DS I think he was also resentful. I felt it was my job to fix everybody. My DS and my H have always had a difficult relationship. I placed myself in the middle and hindered the two of them working things out.
I'm sorry you're going through this. I understand.
Dx brought me to the forum. Being here has saved my family. That's a big and powerful statement but it's absolutely true. We have a better relationship, despite the problems.
I got myself armed up with knowledge and the skills I needed to more effectively support my adult son. I encourage you to read as much as you can about BPD - top right hand of this page. "When we know better, we do better".
How old is your daughter and is she in therapy?
Are you all living together?
LP