Help gypsy the Rottweiler

Hi my name is Chantelle and I'm trying to help my mother in law donnas dog she's a Rottweiler that she got in 2008 when gypsy was 8 weeks old, my mother on law got gypsy after having a rough few years with her husband having cancer and her mum and dad passing away within a week of each other and then her nephew too, getting gypsy filled a big hole in her life.
In April last year just before easter gypsy nearly died and was rushed to the animal hospital at harts veterinary in Bicester where she stayed for 9 days, she had got pancreatitis which then caused a blood clot on her leg, and Then she developed diabetes, at the time gypsy was insured through animal friends with one of the highest premiums as being a Rottweiler she needed to have a high one, payments were made every month but when this happened the insurance company wouldn't pay out leaving a hefty vet bill that my mother in law is struggling to pay aswell as the insulin and needles that gypsy needs every 2 weeks and regular check ups and also a special diet.
I have made this fundraiser as I know it would break my mother in laws heart to have to put gypsy down after everything gypsy has helped her with, also I think it would be a shame to put an otherwise healthy dog down just because of money, thank you for taking time to read this story and I thank you in advance if you can help :)