DV case, with different location people and expecting money not relation

This is my bros case, after marriage they both stayed in Hyderabad. My parents are living 300 km away from them and I'm starting in Chennai. They have two daughters. They hardly used to come to native. From last few years, they some dispute and filled a case against everybody in home. In 2 police stations, they have councils and suggested to change the house. But she was not accepting it, so when she came to her mother's place, he brought the household things to my native.she hardly stayed 2 weeks and went Hyderabad with younger baby. Now she is staying with her grandma, who can't see our walk properly. They both aren't staying together from 16 months, but are in Hyd different places. She is expecting money and he is expecting relation. So she filled a case for maintanence from his salary and some land in my native which belongs to my father. Now my parents for notices. Now my questions are, What the law is saying if man wants relation and women wants money. If she is not accepting the relation after several councillor's, what will happen. Do my parents need to react in the notices, because didn't stay with us and intentionally she filled. And s there any possibility that, we can relocate to my native place court.. Now it has become mental torture to my parents at their old age. Please suggest us the good approach.