What does the girl mean by texting "Hungry ..."? Urgent problem

By the way, were you chatting before she sent this message? If so, then she probably sent a "hmm" (inadvertently wrote the pinyin en as e' n: hungry you). If you didn't chat before, she may have sent it on purpose, homophonic "love you", maybe she is interested in you and testing your meaning. All this is just speculation. You can actually ask her out if you have a good relationship.