How old is she now?


I think you need to separate her needs from your needs. You've mentioned that you don't do well alone. A lot of people have this issue but it's so important to conquer those fears. Maybe a therapist could help? There are big plusses to living alone. Google great things about living alone. You can do this.

She needs to make her own choices even if she's not ready. Maybe she will rise to the challenge. Or if she doesn't do well, she can always stop and go back later. I initially didn't do well at university, took a break and went back and got high grades.