cjj,
Hi, and welcome! This is a VERY old thread you are posting on (started in 2003).
I suggest you start a new thread that focuses on your specific question.
It sounds to me as if you are doing the only reasonable thing. You have offered your home to your grandsons. If they are evicted and you feel that the kids are in danger you might be able to apply for temporary guardianship of them. You might want to contact a lawyer to get more information about what you might be able to do to protect the kids without enabling your daughter and her husband.