Did I walk in a landmine or what? I married the most wonderful man, but his daughter who lives with us half of the time is a nightmare. She is disrespectful and disruptive. She will not clean up after herself. She is always texting on her phone and homework is left undone. I do not know if I can take it any longer. I stay home and her father works. She is fifteen and in the tenth grade. I am exasperated. What can I do?