You could try a shelter of some kind. They are usually created to look like just another house, so abusive men can't find their wives or girlfriends, or to normalize the experience of being homeless for the people experiencing it. I have stayed in both at different times, and felt very safe for the most part.
In Australia, if you get a good one, they have staff who will even help you find a job, house and get on your feet again, if you need that help. I'm not sure how these services would be where you live though? You could find out. Yes, crisis line volunteers will listen to you. They won't turn you away because you aren't suicidal enough for them or anything.
If you feel safe with your aunt, I'd encourage you to go to her as well. You also have the right to place a restraining order against your mother, if you feel she is compromising your mental health. She may ignore it though, that's always a risk. Generally though, narcissists will try and prevent being exposed or getting in trouble with the law if they can help it.
Do whatever you have to to feel safe again. You deserve that much.