It was my nephews birthday on Monday, he is 15 now.
I didn't text my sister wishing him a happy birthday but now she has been badmouthing me to my parents and is making me feel very bad.
Backstory:
Sister is 10 years older, we have never been close.
She used to verbally, emotionally and physical abuse me for no reason when she was on her 20s.
I have always felt very bullied by her and during the little contact we do have she often makes nasty digs.
Since having my kids (both under 2) I have cut her off and have not allowed her or her son to meet my kids, mainly because I do not want a child abuser near my kids.
Again, she has a massive issue with this and says such awful things about me to my parents.
With my nephews, I don't have a relationship with him.
I have never been invited to any birthday patty, or really conversed with him, I did use to buy birthday and Christmas presents but stopped when I received no thank you.
I am not keen on my kids having a relationship with him as it will mean talking to my sister.
My mum says I should have text him a happy birthday and to make amends.
AIBU?