After nine months I would say that the grandparents need to make a sworn statement that they have been caring for this child full time and you need to go after custody. No way in HECK should BM be getting child support for the kids when she is not actually exercising custody of them. I could see if she was giving the child support to the grandparents, since they have the kids, but even then I would say go after custody because the grandparents should not have them if the father is willing to take them and is fit!