How are you feeding ? Are you using some sort of foliar spray ? if you are its way to potent and as the other growers have stated shes go lockout from an over feed I can only imagine. what you wanna do now is just flush the fuck out of her and gradually increase the feed until your back to nice leafy growth. even normal tap water does have enough nitrogen in it to keep a plant alive so just get her drinking pal and you should be sound :)