My son has been living in the U.K. for the past dozen years and has been married for the past 6; they have a pre-schooler and a new baby. When they married, she seemed slightly anxious with a little OCD but since the first pregnancy, she has become more and more difficult, throwing public tantrums like a toddler, belittling him in front of the kids, accusing him of having affairs, texting and calling him endlessly at work, and even hitting him. My son's European father also lives in the U.K. and his sister is there frequently for work, so he does have some family support, but his wife does her best to isolate him and her parents blame him. And to top it off, he is the family's sole support and financially struggling. This past summer I sent a book on living with someone with BPD to him at his office and he took it home, where she found it, so she is punishing me by refusing to let me see their children, including the new baby. It's very hard not to take this personally even though intellectually I know she is deliberately doing this to drive a wedge between us. Any suggestions on how to help him and the kids? I live on another continent.