I'm going to call a girl an attention whore
Is there a reason that she needs to be called out as one?
She's such a little cunt, she always talks about herself
It's better to just ignore her if it doesn't personally affect you. It is distasteful to call her a whore and very misogynistic. You need to not say anything if you don't have anything nice to say.
I'm calling her out and she needs to understand what I'm saying.
I think it's really better if you just ignore her, but if you insist on talking to her about it don't call her an attention whore. She is unlikely to respond well to that. You'd get much further by being kind when you speak to her.