They stopped him!

Katie
Hi all 
My cousins ex has stopped him seeing his baby. He's trying his hardest but she won't let him see her! 
He had a meeting with a solicitor today and they didn't really do anything! .. She attacked him so he held her so she couldn't hurt him and she called the police with resulted in him being arrested and later discharge with no charge as he did nothing wrong. N now she won't let him see her! 
Please could we have advice!!!