Divorce Support Forums: Wanting to leave Missouri to move back home to CA

I currently reside in the state of Missouri now for almost 1yr., my wife convinced me to move back to Missouri from California where she had her mother residing, now I truly believe it was a plan in order for her to leave me,because she had her mom's backing and now had another place for her to go. She has proven to be unstable and has had several affairs throughout our marriage, she is also a heavy alcolholic and drug abuser, with both prescription and street drugs, and has tried to committ sucide a few times in both states here & in CA, I just recently filed for a Custody & Divorce. Quickly after moving to Missouri she would take off for days at a time saying she was at her moms because of stress and needed time, when she was not, but she'd be gone off on binges of alcolhol and drugs and other men and not come home, just recently she had another affair & left me and our 3 kids and now she told our oldest daughter she is having a baby with another man. I want to leave and move back home to California and do not want to stay here anymore. She got an attorney who now has dropped her, but was able to receive visitation twice a month with our 3 children, when she had representation which I feel is not agood thing because of her stability and mental frame of mind. Is there a way that I will be able to leave the state of Missouri to move back home to California, and what happens especially now since now since she currently had her attorney drop her. What if she does not get councel because she can't afford it and barely makes it because of being irresponsible and her mom helps her financially here and there? I was told the divorce will go into default ..so what so does that mean? I do not want to stay here for ever and want to leave because I have no family here and have amd I am getting great job offers back in CA and feel CA is a better place for me and my 3 children. Can you please tell me what I can do to make this happen, what are the precedures or steps I need to take to be able to move back home to California, Please advise, every bit of imformation helps. As I like to know as much as possible and what options I have, knowledge is power (:
Thanks