Wife staying separate for past 6 years and also not appearing in court

I'm working in IT industry as a Software engineer. I'm from Latur Maharastra. I need your help to sort out my family issue which is related to brothers marriage. My big brother got married before 12 years ago. He is having one boy and 3 girls. From last 6-7 years my brothers wife is not staying with us. She is staying in her hometown with his two childs(Boy and gilr). Two girls are stying with my brother from last 6 years. We tried to resolve the gaps between them but she is not able to understand. She wants to sale all the property and wants to settle in her hometown with my brother for which my brother is not ready. Then before two years back we have submitted legal case against her in Latur court. Case was continue still 2.5 years and later they told we didn't receive any answer from other party(Brothers wife) and because of that court has rejected the application. I need your help sorting out this issue.