I am autistic and I used to take care of 100 chickens, and 100 ducks, i had to go outside at 7 am, and feed and water them(my siblings helped of course) and they were loud... And I didn't want to do it, but it was the least I could do since my mom and dad were busy all the time
What I'm saying is, it might be annoying to hang out with them, but your mom might just need someone to watch her, orrrrrr your sister bothered your mom so much so she could hang out with you... If that's the case I don't know what to tell you..