Help Kit Kat beat FIP

My 6 year old cat, Kit Kat, was diagnosed with FIP in Dec of 2019. FIP has always been 100% fatal with no cure up until recently. Over the past several years there have been thousands of cat owners who have been using an experimental treatment called GS-441524. It has a cure rate of over 80%. Kit Kat completed that 84 day treatment, had perfect bloodwork & had been cured for the past 14 months. Unfortunately she became sick last week & had a fever. I took her for bloodwork & her FIP is back. There aren't very many cases of this happening to a cat that has been cured for as long as she has. Maybe she should have been on a higher dose during her treatment, or maybe its because I used 2 different brands of meds during her treatment, who knows, but I can't let her die. I need to start another round of treatment right away. It's still very expensive because its not FDA approved. Donations will be greatly appreciated but if you are unable to donate, please share her gofundme page for us. Thanks so much ❤