My BF is going through this right now but the details are not as bad. He went to the courthouse in CA talked to a family law facilitator, told them what he wanted. He is changing is visitation time and wants his child support amount modified accordingly They gave him a packet of forms with examples. These forms are also available online. He then went back after filling them out online and printing them out, they look over them and tell him what changes need to be made (Although he didn't have any changes to make) and then filed it. They set up a date for mediation and a court date when filing it. If nothing gets accomplished in mediation, then you proceed to court in front of a judge. This would be best for you so you could state you case to the judge of all the issues you wrote about. Along with you paperwork you will submit a statement of declaration. You can write what you are asking for and why. Beings you both were in CA and the kids were born here and you are still here, I would file here. She would have to bring her butt out here! There is also something called alienation of a parent and that is what she is doing. The ex's are not allowed to speak of the other parent the way she is causing the kids to either not want to be with you or having a biased opinion of you. I would make sure I bring this up. Although it is done daily, it might be an issue with the judge!