I'm not going to be affectionate towards my mom
Is there a reason why you wouldn't be affectionate towards your mom?
Her head is getting way too big. She's always rude when I try to talk to her.
Is she like this to anyone or just you? I would recommend taking her to a psychiatrist. Your child should be on top of the list when it comes to people you are affectionate with, so it is very odd that she's always rude to you.
She's always annoying. I'm not going to give her any affection, so don't worry.
You should try to work out your issues instead of ignoring them. If you two start treating each other coldly, the relationship will suffer. Isn't it better to have a good relationship with your mom?