-녜 is -냐고 해 squeezed into one syllable, reporting a question somebody asked: 그러면서 저보고 왜 안 먹녜요 'and then he asked me why I wasn't eating.' It is quick, casual speech, mostly heard in the middle of a story. Two lines here are a different thing that looks the same — 아녜요 is just a contraction of 아니에요 'it isn't'.