So I have found out that it is not the BM that is withholding the kids from DH. It is her new husband. He does not trust her to only talk to DH about the kids. Recently BM invited DH and the kids to do a web chat through gmail video. She stated that she could only have the kids do it when her husband is not home. BM cheated on DH when they were together, and it didn't come out that she did that until they divorced. We are pretty sure that new husband knows she cheated and doesn't fully trust BM. When BM first invited DH to web chat with the kids I didn't feel comfortable about it because of her. It caused a little bit of a tiff between us, but we got over it. Now he says he will not do a web chat without me there since she has now stated she will only have the kids talk to DH when new husband is not there. BM and new husband's relationship is not sounding too steady. We have figured out that when we get nasty emails from BM it's because new husband has gotten on her case about something and so she takes it out on DH.