Can I snap at a girl who has a short-ish temper?
Has she snapped at you before?
I've had to deal with her snapping for a while.
It is rude to snap at others if they have done the same to you. If you have a problem you should tell them and be honest about it.
No, I think I'm going to snap at her first and see how she likes it.
I understand that she needs to know how she's making other people feel by snapping at them, but I believe it's not necessary to let her feel the same pain. How about having a long talk with her on what she does and how she makes you feel, that could be a real eye opener for her!