Kitten Hit And Attacked

This is my kitten, Theodore. He is only seven months old, and yesterday he came home limping and collapsing every few steps. How he managed to struggle his way home is beyond belief, but we are so grateful for his safety.
After rushing him to the vet, we have found out that he has severely damaged his femur. The vet believes that he was hit by a car after which a larger animal took advantage of his injured state and mauled him. But thankfully surgery can turn him back into the sprightly kitten we know he is. 
The problem is... this surgery is expensive, I am currently looking for a job but only volunteer at Upper Ruxley Cattery at the moment and don't make money to cover the costs. Any donations would be really appreciated, no matter the amount donated. Every little bit would bring us closer to making sure he gets the treatment he needs. 
Theo is one of the most important things in my life. My parents bought him for me in March to assist my mental health, as I've been struggling for a few years now, and I can genuinely say he has helped me so much. He brings so much life into our home, and if something were to happen to him I don't know what I'd do - to me he is irreplaceable. 
Thank you to anyone who donates, and know that we really appreciate any money that is raised.