My wife done fake complaint against me

Dear All, My wife have been complaint against me and my family fake eligation like dahej and sexual harassment, even I m staying far from my family, I m totally surprised of her fake eligation against me and my father and family.I have 6 years old boy...he told me that his mother beaten many time to him...she has gone her home..I came in mahila thane for counciling twise but only they are demanding for cash and divorce..and my basis concern is how can I safe my family and my self..even they r ready for settlement but I know after settlement they will ask to give my son..my son don't want to talk with her...she is calling me and when I don't give the phone to son for talking then she take the screen shot and in front of police.she show that I called to him and my husband has not given the phone to my son for talking..I know after settlement she will create the problem and defiantly ask to give back of my son...I don't want to give my son Ro destroy his future...kindly advice how can safe my son from her...