What do you think if I were to snap at a girl?
Why would you want to snap at her?
There is a girl who has been bullying me for a while and I can't take it anymore
Even if you're upset with someone you shouldn't snap at them. You should do your best to calmly present your argument to them rather then letting emotion take hold.
I don't care, she did this to me and has been making my life dreadful.
Why not tell the school administration that she is bullying you? There is probably zero tolerance in the school for bullying. Let the teachers and counselors get involved and help you fight this bully back, or she might never stop harassing you.