"get her stoned i guess, weed always makes girls horny"
*shakes her head in disgust*
Gimme a break... giving your girl drugs won't make her have an orgasm. Sexual disfunction is most often a mental thing with females. That's why there isn't Viagra for women. Try talking about it and trying new things SOBER. Most importantly, don't set expectations for her to have an orgasm every time you have sex. Things like that will cause her to feel more uncomfortable, thus keeping her from being able to have an orgasm. Oh, and a healthy session of oral sex (you giving, her receiving, of course) will do wonders... a lot more than any drug in the book.