Hi Huitzi,
I'm glad you've decided to join us, Welcome to the BPD Family
Can you tell us a little bit more about what is going on with your brother? What do you see going on? How can we help? How long have they been together? Do they have children? What is the relationship between you/other family members and your brother and his wife? Has SIL been diagnosed or is it like many of us here her behaviors just fit the bill? Where would you say you are in your understanding of BPD?... .Whew... .that's the end of my 20 million questions

The more we understand about your situation the more we can help.
I also wanted to point out the box to the right --> each item is a link to more information you might want to check out some of the links in the "Lesssons" section when you have time.
Looking forward to hearing back from you.
Take Care,
Panda39