Long story short, so not complete details.

My sister (Sis) has been SM to skid for about 8 ½ years. The kid is 10. For the most part, it's been a good relationship with skid, but not so good with BM.

Skid, at around 5, told BM that Sis had been pulling her hair, sticking spoons down her throat to choke her, throwing her down the steps, etc. BM kept her away from BIL, it was investigated and found that skid was lying. FF to now and skid is pulling the same crap, alleging abuse. This last time happened the day she went home, after BIL decided he was going to start setting limits with her at their house and enforcing them. She has been in counseling and there has been no evidence of any abuse at all. BM is refusing to allow my BIL to see his kid, won’t answer calls, won’t return calls, etc.

They had mediation yesterday, because BM is now trying to get supervised visitations with BIL and not allowing skid around Sis at all, etc. So, at mediation yesterday BM tells BIL that she’s been wanting to tell him something for years but didn’t because she was worried about his mental state, but that skid might not even be his!! So now he had to go do a DNA test. He is devastated to say the least. Then, the BM had the nerve to tell him that if he is the father she wants him to take parenting classes because she doesn’t think he’s emotionally equipped to be a parent!! I found this funny coming from the woman who just admitted to an affair which may have resulted in skid. Poor guy.

Sis has already laid down the law and told BIL if skid does come back around that skid is never to be left alone with her or her bio children.