I've been told it's traditional to ask the groom's sister to be a bridesmaid.
Her and I have talked, we mostly see each other on Sundays (when i go to his parents for breakfast). She criticizes him a lot.
I do not want to ask her to be in the wedding period... I think she will criticize everything I choose/do and I don't want that kind of stress.
I'm also really nervous about what his mother may say if I don't include her.
Anyone in the same situation or have some advice?