Is NOBODY wrong in the post ? POST : Context:

I have a 3 year old half-brother. He has some kind of severe learning disability (cannot talk or understand many words at all), and is very difficult to control and impossible to reason with , as he doesn’t understand words. This is  probable cause for a whole separate post, but I just generally don’t really feel that connected to him. I am home from college on break, and my parents last-minute asked if I could watch him so they could get dinner. My plans that night could be rescheduled, so i agreed. This involves me making him food, washing him, changing him, and putting him to sleep. Now, I wouldn’t want to be like paid as much as like an external babysitter, but AITA if I ask them to spot me some cash for the night for watching my own brother? 