Sorry to hear that mate, it's hard when you lose an animal you're close to.
At the start of last year one of our cats got hit by a car, it broke her back legs and she crawled home. My mum took her to the vet and it was gonna cost £600 for the operation and we just didn't have the money at the time with it being just after Christmas and she had to be put down. It was horrible.
The bar-stewards still sent us a bill of £250 for keeping her in over night.