psycho ex and in laws games..advice please read below?

[?Toxic?]

ok so here's the deal, my husband has a 5 yr old son with his ex, she cheated. had another kid with the guy she cheated on him with he got abusive and wanted my husband back. he wouldn't do it.she went completely psychotic, in and out of the loony bin for taking pills ect....she moved out of state and said since he was getting married he can't see his son anymore she calls very odd hrs of the night going off her rocker, so he changed his numbers then i got pregnant with our daughter and we got married.so my mother in law decided it would be good to give her his new numbers she started calling again and puts words in there sons mouth when he gets to speak with him {like hes just her puppet}.so he called his mom and told her not to give it out again under any circumstances or else hes going to not give it to her either next time around. his mother took that as disrespect and said he was a deadbeat. So his ex pounced on that argument between him and his mother and is all over his whole family and has them turned on him and they don't want anything to do with him,me or his 1 yr old daughter. she is making comments all over facebook about how much she loves them all ect....with her games shes playing...they are now neglecting my daughter, calling us bad names to his ex. by telling her he just chose another p***y over his son,which is not true at all,she began downing me and my family, him and wont have anything else to do with our kid. taking it all out on us and our baby. he cant deal with his ex anymore and she is using there son together as a tool against him example for 31/2 yrs of there sons life, ""you either wire me some money or give me pills like hydrocodines ect.., or you will never see your son again,""so he cut her off not his son though but he can't talk to his son without going through her and dealing with her crap too.when she gets contact she is waking up our 1 yr old sometimes between 12-6 pm and wont stop calling until we pick up. he now cant see his son because hes across the country and shes living on welfare and saying shes gonna keep opening and closing cases and his a** will be paying, how are we suppose do deal with his family and his ex are we right for writing them of stuff is effecting our sleep our family alot? and we are struggling right now he was laid off and can't afford attorneys, she got his whole tax return by him paying off her welfare that she keeps moving around different areas and sure to close out each state and open another to save her from the law,he is no deadbeat he really wants his son and he could of had him. but the courts said it'll be a huge risk because the courts are more for the mother, and without an attorney we would probably lose. we called the police and they said,the mother can move where ever she wants to move. and if she said no to us getting him then she could call the police and we could be arrested if we took him back here.we tried to have her sign him over as soon as she got released from the hospital. she said she would think about it and has there son in her arm and she took there son as she left.then left the state. we didn't want to take his son to that talk but my husbands family insisted because she needs to see her son too. so we did and now look where he is at. and what his family is doing to us right with her the thing is he tried to get custody of his son and his side of the family/mom/sisters played him like a fiddle, via making him think they were helping then turned there back on him after it was too late. he is a good hearted 28 yr old man who loves his family and both of his kids there is no reasons for this at all so please give advice without negativity thank you