maple beautiful ginger girl

my beautiful ginger cat got attacked in her own driveway by a dog and it tore two tendons in her leg she is well loved but the cost is increasing at the vets weekly as she has to have a procedure done on her leg every week a new cast or sedation and its over $1500 already and they are talking about possibly having to amputate her leg which we are all praying that's not the case but we have another 2 cast changes and its $180 per cast change so it's expensive but she is worth it!!! any help would be appreciated