I want to ignore my grandma
Why don't you like your grandmother?
She's hateful toward me for not having a son
Grandparents can sometimes be annoying due to their different beliefs but it is not good to ignore her. She only has so many years left and you will feel bad for ignoring her.
I want to ignore her and make her suffer.
I don't think you should intentionally make your grandma suffer. Just try and accept her for who she is.