^that's just her demand, now its up to your brother na linisin sarili nya from all the accusations.
Sis, I have to be honest here, I understand the case of the wife because that's exactly my demands too. I hate to differ pero siguro you can also use my opinion to understand where the girl is coming from. Peace.
Like the wife, my first demand was for the father not to be able to go out with the kids without my presence. Why? Because when umalis sya sa buhay namin, and when he decided to flirt with other girls, I was the one who stood strong for the kids. I was the one who pretended that life was still beautiful despite the aches that their father was giving. I was the one who had to protect the kids from other people's talkings like "yung dad nila nakita ko may kasama iba". I had to explain the painful truth in the most subtle ways just for the kids to still remain positive about life, about their father.
And when umalis sya, the kids' life started to revolve around me. Ako lahat from simple everyday events to family day sa school. Tapos all of a sudden just because gusto na ng dad umeksena, magbabago lahat yung usual routine namin? No. Hindi sa ayaw ko maging part sya ng life namin because the truth is, I begged too many times for him to at least spare some time with the kids but he was too busy flirting around. So if he wants to be really a dad to his kids, ang sakin lang, take it slowly. Sasama muna ako during the first few meetings para maging at ease naman yung bata. My condition was not to bring the kids sa bahay nila until the time na close na sila ulit as a father. This way, hindi masschock yung bata.
I hope maayos na ng brother mo ang problem. Its about compromise lang naman. Nagkasundo kami ng husband ko sa ganung setup and I like to believe we're ok now. He's now part of the kids' life, more than before. And I must agree, kelangan sa magasawa may legal intervention para yung mga conflicts maayos. Nung una I thought magaaway lang kami but through legal arrangement, naging friends ulit ki. Good luck.