She is stuck in a wheelchair with no Diploma or GED...and lives about 6 miles from town. In this case, the 300 is so far away, I’m truly scared for her safety.
Sounds like a smart kid though and she writes with fewer misspelled words than I. There are always options and opportunity for anyone willing to work at finding them. The two of you working together on the problem will make it easier to find a solution.
Do what you have to do to buy some more time until you can come up with a longer term solution. I agree, her present circumstance needs improving ASAP, even if that means you hide her out for a time.