Custody battle

I know I know it’s not about me. But I love my husband and I love his beautiful daughter more than anything. His ex wife is trying to get more time. She already has her 90% of the time and she wants more time. She is so selfish. It’s getting so close to our court date and I just wish there was something he could say or I could say to change her mind. Make her see that he is an amazing dad. He isn’t a dead beat. He wants a relationship with his daughter. I just need some Christian advice because I just don’t know what to do. What if he looses time? He will be devastated. He will be so heart broken... I just need some prayer because being the step mom and being on a side where I am not selfish and seeing a woman who has already hurt my family is hurting them again hurts me.. I just want to help and I can’t...