Help with Lynda's medical bill

When Lynda turned 70 last year she booked herself a Caribbean cruise.with her friend, they sailed out on 29th October 2019 on what was going to be a trip of a lifetime for her... She said goodbye to her little dog Billie, her companion and best friend whom she loves dearly and off she went, 5 days into her trip she developed a nasty gallbladder infection, her bowels stopped working and her liver was under massive stress. The treatment she recieved on the ship kept her out of danger until they reached land in the port of Barbados. 
Lynda was taken to the public hospital in Barbados all alone, scared, in pain and extremely vulnerable, she had a horrific experience for 3 days receiving no food, no fluids and more importantly no treatment until her daughter Nicky flew out from UK to be with her. Nicky managed to move her mum to a ward where she finally started treatment, IV antibiotics for 7 days. Nicky then took over everything to do with paperwork and finances, this is when she found there had been complications with the travel insurance and they were not willing to cover her treatment or travel costs. All expenses are now down to her daughter... £8,000 for the ships medical bill and £3,000 ongoing bill for the hospital, flights accommodation and other expenses are mounting up day by day for Lynda and her daughter who are still stuck in Barbados hospital desperately trying to get home.  Lynda is sitting in the hospital with a tiny photo of her little dog Billie praying everyday to get home to him. Lynda is a retired pensioner, she has worked all her life but unfortunately has no savings to cover all these costs that are increasing day by day. They just want to get home. Any help would be greatly appreciated. Thank you.