<human>: Can you succinctly summarize the text in 1-3 sentences?

My older brother had two kids with a woman he was with 9 years ago. Shortly after the woman took the kids and left one day with him unable to find her. She got into drugs real bad and was in and out of jail so the kids started staying with her parents. It wasn't until then we knew where they were. The grandparents of the kids contacted my mother and told her we could see them. She wouldn't allow my brother to see them because he too was in a bad spot in his life with drugs and alcohol so we understood. For the past 8 years or so my mom and I have been seeing the kids often and they come visit. A little over two years my brother started cleaning himself up. After a two month stay in jail he got out and I put him to work to keep him busy. He met a nice girl and got serious about the important things in life. He got married and they wanted to to start seeing his kids. For the past 8 years he has had nothing to do with them but sending a little money here and there. He has been sending the grandparents letters and calling them wanting to start seeing the kids and helping pay for things for the past year. She will not return any of his letters or calls. About 9 months ago he got diagnosed with diabetes and was told he couldn't work for close to a year so now he is back in school. The grandmother is now wanting to take him to court to make him relinquish his rights to the kids. My brother is in school and doesn't have the money for a good lawyer. What can I/we do to make sure this doesn't happen. He's turned his life around and we feel if he loses his chance for these kids he's going to fall back off into old habits. Any advice is greatly appreciated.
<bot>: My brother is being taken to court to give up rights to his kids after not being there for 8 years. He has cleaned himself up and know wants to contribute and be a father.