The Husband's mother has invested 90% and wife has invested 10% and purchased a flat. The couple has 4 children, the eldest is in 9th standard and youngest is 5-6 year old. Husband works out of India as teacher and wife works in Mumbai as teacher. Subsequently, Husband and wife has filed for divorce around 4-5 years back. The wife is not allowing the mother in law to stay in the flat although the first name is her's and she has invested 90% of flat cost. Instead, the wife is living with her 4 children and her sister in the flat. The Husband has been paying for maintaing the children and since the wife is also working, he is relived from paying maintenance to wife. Recently, the wife expired.
In the above circumstances, need to know: (1) the custody of the 4 children goes to whom? (2) What happens to the divorce proceedings now? (3) Procedure to change name of wife and replace in society?