syphilis sorry! you really need to talk to her about it and even tell her parents (or yours and ask them to tell hers) otherwise it could turn serious- and whatever you do DONT have ex with her!
It's not syphilis because that would have some sort of pox on the outside of her vagina in the labia(check wikipedia). I don't know what she has, but I'd definately suggest she goes to a gynocologist.
dont listen to these idiots.most have never seen a real pussy so how would they know? the blue lines are veins and a vagina can be red pink purple etc depending on her time of the month or her state of arousal .
Next time try sticking your winky up there you clown.