Get Katy Back to College!

Greetings! I am trying to pay off a couple of back medical bills that showed up on my credit report from 2009. They total $2500.00 I have been able to sign for a parent plus loan for my daughter Katy and had my credit all cleared up. Then wham! this shows up. :( We are struggling financially so badly and trying to make ends meet as it is. Now Katy cant have her loan unless i get this paid off or I get a cosigner. I am 53 years old with serious health issues and no health insurance. I have raised my daughter alone and with no financial help from her Father. She is an amazing kid. She doesn't smoke drink or do drugs. She has never been in trouble. She has gone through school with straight A's since 1st grade. I have no credit cards and nothing fancy at all in my life. So that is zero credit card debt, a beater car on its last leg, a Wal Mart pay as you go phone, a 11 year old microwave oven, garage sale shoes and a leaky window air conditioner. I work between 40 and 50 hours a week but doing this all alone is tricky. School is everything to my Daughter. She has very high GPA and is on The Presidents list. I don't want her to have to live hand to mouth like me, so she is going to school to better her chances in life. I know this is a lot of money. I have tried to get loan from Springfield Financial and from my bank but i have no collateral.Please help me get Katy back to school. Please.Please Please.
Thank You for reading this .
Tina Frick