I am new to Mumsnet and I am desperately seeking advice on how to handle my 20-year-old child who lives with me. She refuses to heed any basic rules, such as cleaning up after herself, and becomes verbally abusive when I ask her to take responsibility. While asking her to leave home seems an obvious solution, she simply won't go (and wouldn't be able to afford to support herself in any case). I'm pretty lousy at managing conflict, and I starting to go a bit mad. Please, have anyone managed a similar situation? Grateful for any advice.