igonore her , she not worth it. also i had a look at the link the other answer provided, OMG, i cant believe there an actual research out there support what we suspect all along, i must make a copy of it, it will be really handy when i have deal with homophobes in the future.
EDIT i just read @mack answer, i agree with her in a sense there is not need to stoop down to her level, also i think many of trolls do have/had a very sad life for them to become so hateful in the first place, i kind feel bad for them just to think about it.