Bipolar Wife and Child custody

Should a BP wife with a iresponsible tract record be allowed to take our children out of the house and manipulate a reason to justify it. I cant proove she does it but she lies and puts people against eachother all the time . She to my knowledge has never been diagnost . She swears she not ,but I think her whole family is . Mother and Sister help and corral the kids . What are they telling them . They dont want to see dad and rider motorcycles anymore. What are they doing to my kids? My stepson tells me how Grandma gets mad and slapps my 7yo twins inhe face. Their aunt , my wifes sister is a Georiga State dfcs social worker . Im sure they have Manipulated those folks in dfcs . They have at schools,when I walk into school to see if the Kids were even their I asked to speak with the Principle. The Receptionist got up and went to another office and called my wife. Manipulation. My work-I resigned from my job after 15 years to investigate home happenings . After my wife had evesdropped on a phone call she accused me of being on meth. I was'nt ,I tried it I told her thats all. She insisted I go to the emergency room . She was livid when they couldnt find drugs in my system and didnt put me in rehab. She even filed divorce then and got tempary child custody due to mye being in rehab. Manipulated it all,Ruined my reputation and have tried to discredit me , even at church, telling the kids to pray for daddys drug problem, She is having an affair with my copition. I have started my own business and she has been trying to sabatage it all along. Told everyone Im addicted to meth. I tried it along time ago. I quit giving my wife money and she split with the kids and filed devorce. This time for abuse. All the kids are having problems in school, they are more than capable of doing there work if they had a set path and were shown hoe to develop good work habits and help responcible when conduct is bad. Help!!