What is your birth order? Parents often treat siblings differently based on where they fall in the family. Not only that, but girls and boys are treated differently. At 21 you are still quite young age wise, but most 21 year olds are fully capable to be independent of their parents and to your mother you are probably still seen as not yet independent enough to safely navigate the world. If you are the “baby” of the family, your mom might not like the fact that now you are grown up and she may never let you grow up. On top of that your mom may have her own anxiety and worry issue that she needs to take care of, obviously don’t tell her that unless you want to have another fight. It does no good for her to stay up worrying, and calling the police at 2:00 a.m in the morning is going to do what if you just went out that same night? They aren’t going to waste their time with that. Your mom could and should just go to sleep, she can wake up see if you are home at 2 if she wants, ask if you are safe, you respond and that is the end of until you get home. There is no point on you living at home if your mom is going to delay your growing up process. You would be much better gaining life experience and maturity by moving out on to your own. You will probably have deal with some stuff, like her saying that you are just moving out because you have a problem with being courteous, following rules or whatever, but your 20’s are the years when your brain begins to fully mature and you begin to develop into a full blown adult, in your situation you shouldn’t wait to start this process, because the more your mother makes you rely on her in various ways the more these attitudes will stick on you and the longer it will take to sever the chord that she has wrapped around you even when you move out. Sometimes parents form a bond with their children and just can not let them grow up. If you wait to long she will be texting you when you are 30 at midnight asking if you are at home and who wants that.