Does it make sense?

My husbands ex recently informed him that she was putting their son into daycare while she goes back to school. She told him they were going to charge her $500 a week and asked him to pay half.

He told her there was no need for him to be in daycare because he is available to have their son on those days and times. She said no because those weren’t his designated days and she didn’t want their son around me or his siblings more than he had to be.

Their son loves being here, each time he has to go he doesn’t want to because he’s playing with his brother and sister. I don’t understand why she can’t act maturely enough to let him be here instead of daycare center. If it were me I’d rather have my son with his dad than strangers

Also something she doesn’t know is that I used to work at said daycare center and I highly doubt they’re charging her $500 a week. She’s unemployed and a student. (The daycare center is at a local community college I attended) For unemployed parents that are students at the college, daycare is free. It’d make sense if she put my husbands information on the paper work, but she said she didn’t because she didn’t want him going to pick him up. Just makes no sense to me