Marie's medical bills

My Mother Marie had a stroke while on vacation in Florida.  Her Insurace company "Tuft Medicare preferred" is not recognized in that state.  After 2 weeks in intensive care she became stable. The Broward Hospital social worker informed us she couldn't stay there now that she was stable. She was nowhere near fine, she could talk, had a feeding tube in her nose and later to her stomach. She is well aware of the shape she is in.  Finding her a place in Florida wasn't possible with her insurance and  traveling back and forth was a lot of money for the family.  We all decided she needs to be home in Massachusetts with her family, if she is to survive. So we got a deal with Angel Med Flight, an Air ambulance company at a reduced price of $18,000.00. One of many bills that are arriving. We would appreciate any help.
Thank You, 
The children of Marie Pantalone DiDona