I can really relate to this thread as well. My stepsons girlfriend used to stay the night every so often and it gradually merged into moving in full time. I found her difficult, rude, moody and a user and the toll it had on my health and sobriety was huge. Years later I realise that I am the only one responsible for that mess due to my inability to be assertive and make good strong decisions. I hope you have found a way to get that person out of your house.