How do we get my grandchild back?

My sons ex left taking her infant while he was at work. He had no idea where they went. She told him the baby was not his. He had been trying to prove DNA all along. He found her in NY, we are in MI. It took several court orders but the DNA was done and He is the Dad. We also found out that she either gave the baby to or lost the baby to someone else and has not had the baby for months! the baby is only 1 1/2. We don't have thousands of dollars for an attorney. The longer this takes the harder it will be on our baby. My son is now with a wonderful girl with another little one on the way. The baby needs to be with family that love her. Any suggestions? Does this lady have a chance of keeping the baby? We also found out that the baby's mother lost custody by the state of a son years ago. We don't know what to expect, and who to call other then filling out paper work for custody change. Any ideas?? Thank you!How do we get my grandchild back?In most states there is legal aid, go to your clerks office and ask them if there is legal aid in your state to get the number or the welfare office, let them know what is going on and they will help you.How do we get my grandchild back?i dont know really sorry. have you tried asking the police? you might want to post this question in law. i think you may get more answers. good luck!How do we get my grandchild back?Most lawyers offer one consultation free, and I think you should get an appointment. If the girl gave away her baby or %26quot;lost it to%26quot; someone, that's illegal, and a police report should be filed.