@lupelupe55 First, I am sorry for your situation. You sound like a smart, motivated student who will work hard and succeed post-graduation. I think @publisher’s suggestion you start by contacting FA at the schools you’ve been accepted to is a good first step. Bryn Mawr might be the most receptive. Was most of the $$ you received need-based or merit? Was work-study included? If dorms are required freshman year, could you volunteer for a triple and save a few $$$. For subsequent years, the suggestions to apply to be an RA or live off-campus make sense - but first you’ve got to figure out the first year.
Unfortunately, given Covid-19 and the resulting financial meltdown you won’t be the only one asking for more, please. Could they defer your acceptance (scholarship intact) until Spring 2021? Or Fall 2021? You could work and save a few $$$ - of course, that’s if you could find work as unemployment skyrockets and if your parents are okay with you living home for a few more months.
I would push hard to make one of your current options affordable. It’s unfortunate your summer internship was canceled. Ask them if they have any suggestions on where else you might apply. Apply anywhere and everywhere now for summer employment. It sounds like you’re good at math. Can you offer your tutoring services locally at a reasonable rate? Plan on working over school breaks if you can.
Hoping this works out for you. Please keep us posted. We’re cheering for you.