Hello Ihope htings get better for you soon. I think and feel that you need to set some rules for your daughter in your home. The first rule is to respect you and figuring out what she needs to pay to stay in your home. Rent Free is not acceptable to someone your daughteers age and it is not responsible on your part to let he live off of you. Perhaps you getting money from your daughter for her own car would be a good idea. There is always Metropolitan Housing in every state and this goes by income generally 30%. Your daughter may need to live in different housing than with you. You are enabling your daughter to disrespect you by letting her disrespect you, by not setting the GROUND Rules, and the boundaries. There is nothing wrong with wanting to live your own life and have your daughter have her own life, since it a conflict for you and your daughter to get along at this time. I have an older daughter 22 so I know where you are coming from but sometimes it is better to let go of the children when they become adults to be able to live their life and your own. I am really concerned about your mental health as well, you need to feel safe in your own home and with yourmental health. If your daughter is capable of working and supporting herself perhaps the best thing is to let her get a car with the money she is not payng for rent and let her live by herself. You dont have to feel alone or guilty for making the right decisions for youe life. I hope the best for you. Take care and stay safe Soidhonia