dunno i usually make those kind of girls cry by saying sumthing they and everyone else around finds offensive :)
AVIOD. She'll notice you aren't paying one bit attention towards her and she'll disapear hopefully realizing she' waisting you're time. ( I typed hopefully.)
confront her and put her in her place.
when she talks to you say:
"what? i didn't know dogs could talk or(or i ddnt know they let dogs in the school) and then maybe say "som1 call the exterminator i think itz got rabies.
it would probably be besr to have a friend there to back you up.
think about what she would say back and make sure you have an answer to that too.
(im so good)