Regarding Family matters

I am Vishal. My father is a government employee in the public health department. He is working from last 25 years. The problem is that he stay abroad or outside home for a long time. He personally doesn't give duty, he assigns to some other person on behalf of his duty. He also has a business of tour and travel, he stays in Delhi, Chandigarh or abroad for months. My mother is totally depressed about this problem. He also doesn't give money at home with the proper amount. He doesn't talk to my mother for many months. Yesterday, he came from Chandigarh and in the morning my mom asked him what you do there, why you did not come home ?. He pushed my mom and she felt and she got hurt on her eye very badly. The conclusion is that My mother wants half of his salary now. My father says he will take retirement and will go abroad for forever. What will be a suitable solution for this problem? What should my mom do for getting half of his salary or something? Please tell me, sir. My email address is [deleted]. Thankyou