My Ex husband left the state with out telling me and expects me to give my kids to his new wife

Ok my ex and I have 2 kids 7 and 2. When we divorced back in 2014. He was in the military and got out to be closer to the kids. My Ex was physically abusive to me and my oldest which he is no longer to me. I don't know about my oldest. He was also emotionally abusive and Manipulate me and my oldest. We share 50/50 custody! He made me fell like a bad mom and told me I would loose custody of my kids because I couldn't keep a job when I did I was never home and I didn't get but 100 a month for both kids in child support so I couldn't get child care. He told me he would help if I signed over primary to him which in our case. He just decide where they can live and what school to go to. I signed. Well after that he got married in June 2016 he rejoined the reserve. I went to pick my kids up at two different daycares and he had his new wife as their mother. And I couldn't take them out of daycare. Also this happened at my oldest school. He is supposed to let me know where he moves and if he does change schools. Twice he moves and didn't tell me I had to find out through my daughter. My Ex think it's ok to let his new wife's mom watch my kids when I told him she is not aloud to her past drug and abuse charges on her and her husband. Also she knew her oldest son was raping her daughter for 3 years and didn't do shit. Well back in July I called my he told me he left the texas for 2 weeks and he left his right with his new wife. She is not on our paperwork just me and him. Well the first day I got them I noticed my youngest daughter looked like she was messed with I took her to the Dr and the Dr reported it to cps. We told them everything I was told by her Dr and cps that I didn't have to let her have them if I didn't fell comfortable. It became a house fight. Well when he got back. He apologized and said that he was going to be deployed in February and that we could just do what we did last time or I took the girls and let his new wife have them on her day off. I agreed. I told him before he left again that he and I would have to sit down and redo our paperwork so she can be involved and my new husband. he agreed well after time went by and school started my daughter started feeling and was late 3 times within her first 3 weeks and do to that was there excuse of being they overslept because they were tired they do not work nights they get off at 11 o'clock at night and they don't go to work until 3 o'clock in the afternoon. Well I never heard back from cps but they called my mom and asked if everything was ok and that there was a new girl for my case worker. Well after the Dr reported it to cps he switched dr. And hasn't told me anything. Well yesterday he didn't bring me my kids and I was like ok he will tomorrow. I called his new wife was a bitch and told me I couldn't talk to him I ask when they were bring the girls and she told me that she thought I didn't want them. I told her no well turns out they have been sending them to his parents house when they have them because they are tired. Also that he was leaving today for 4 weeks and I refused to give her the girls Wednesday I could get into trouble. I am talking to my lawyer tomorrow about if this is true because I care about my kids safety. Is it bad I would rather get into trouble when he gets back then let her have my kids. Also the only reason she wants them is because that's a extra 1,000 on his paycheck because she will be the caretaker. I don't want the money never have I just want my kids to be safe. Sorry if this doesn't make sense and the misspelled words I am just so upset right now.