Divorce

Married 5 years back but most of the time she stays at her mom's place and she will not take care of my parents at all. We have a 2 year kid and her family totally involved in crime. Her dad was a rowdy sheeter and her brother raped a girl and still case is going on. Her parents stay separate because her dad stays with other lady. I am a software employee, week end I do booze even for that she makes lots of issues. Still I will take care of everything and now she fought and left my place n it's been 2 to 3 months. Now she is planning to go abroad without giving divorce to me and she is doing things without my notice. Now I have 2 questions here. 1. Can I stop her before going or after going there if I come to know, then can I have option to take her back by case filing. 2. If she don't have any abroad plan, can I take my son back since her family not settled and going through police cases because I don't think a small kid growing in such environment because he may get habituate with kind of their behavior. So can I take back my son?