I'm going to tell my girlfriend she is overreacting
Do you really think she's overreacting?
I just think she is a silly and stupid girl
I see how you feel, but have you thought about how you calling her silly and stupid might make her feel. Be more understanding of her feelings in the future.
She's so annoying, is this what it feels like to be in a relationship?
I think you need to be a little more understanding of your girlfriend's feelings here. You should try talking to her in a more calm manner.