When there is a guilt trip involved, from a parent, it compounds everything!!
I did go away to college, and lived on campus. But after college, I lived back home for a while. I was working two jobs. And when I made the decision to move out...let's say, it wasn't the finest hour between my mother and myself.
I spent 5 years to graduate, with some extra credits than was mandatory. And moved out, to my own place at 24. Which was a year later.
It was not the most emotionally pleasant thing, the argument with my mom, over this. She insisted, I stay, as her support, she was tending to a disabled husband and had taken in her mother in-law who was dealing with dementia-like troubles. I wanted to move out, as it was a right of passage. And, I couldn't live in a home, where I'd get up for work, and be unable to use the bathroom, because of the mother in law...she used to fall asleep in there.
It was something I needed to do for myself. Glad I did it, sorry she and I argued over it. My grandmother supported this decision, as she and I had had numerous discussions about independence before meeting a man, and marrying is a good thing to have. It was something, she'd done, in her own youth.
Hope you are able to figure something out.