Amy being mean

Did it ever bother anyone at how Amy sort of becomes somewhat mean and stuff? Like during Season 10 ep 13, she and sheldon are living in penny's apartment and when she hosts girl's night, she said like "is it weird that we're having girl's night here but you don't live here anymore so it's MY girl's night? Now you're thinking about it and it bothers you" and what not. Idk it sorta agitated me a bit. there were somewhat similar instances of similar behavior in earlier episodes that I can't exactly recall as well.