Amy - you have my sympathy and my prayers.
A friend of mine had a similar issue awhile back, and she ended up finding something on a site similar to craigslist (I don't think it was craigslist, I think it was a local site LIKE it.) She found listings for people selling rewards certs. & then she ended up posting a barter deal - something she had in exchange for rewards certs. (I believe they were Southwest Airlines certs.)
It worked for her - so worth looking into. I would be very, very cautious of jumping into this approach, though. Her deal worked out great, but she could have just as easily been scammed.
If that doesn't work out, and certainly understanding there's a time factor, have you tried borrowing from relatives? In times like these, families usually will bond together, so it is more acceptable to ask to borrow money than it would be at other times.
All else fails, you can take out a signature loan at your bank. They can process them very quickly.
Good luck - S.