My best friend, Liz, is shy, introvert and has anxiety. Sometimes she asks me when I have free time to accompany her to parties, shopping and doing stuff so she feels more comfortable with me around. I like to be there for her.
There's this friend of her (let's call her FA) that is sometimes with us, especially in parties that I'm a little stranger to others. FA just won't stop criticizing what she knows I like and do. she doesn't do this directly for example:
I can't stand people with Y haircut. they are so horrible.
(I clearly have Y haircut.)
All this started from one day that FA said "let's listen to my kpop playlist" and Liz said "oh my metalhead friend here won't stand that". Yeah I'm a fan of metal music but I always keep that to myself. Liz was joking and I didn't want to nag about kpop. For a long time, FA was like "metal is only noises", "metal is for violent lunatics" and blah blah blah.
I REALLY don't care about what she says. These things she says only make her small and since it is a long time she is doing this actually others are getting annoyed. I just want to be there for Liz. that's all. but I think I should solve this so in parties people have fun not being like "there she goes again!"
why is she doing this? I don't know I don't talk much or notice my surroundings.
How I can talk to her reasonably without turning her into a new disaster?
I just don't want her to think that she is bothering me and try to make it worse just to enjoy more or she thinks she found a week point in me. All I want is that parties be fun for people and Liz enjoys it.