Young Puppy with a Broken Leg

When 8 week old Claire Bleu's foster got her and her siblings up a couple of mornings ago, Claire Bleu wouldn't put any weight on her leg. It was swollen and she was crying. We don't know exactly how she did it (probably wrestling with her siblings), but her leg is broken and now in a cast. She'll need to have the cast changed every week for several weeks and x-rays repeated to make sure it's healing correctly and that she'll regain full function in her leg once the cast is removed. It's a long process, and an expensive one, so any help you can give her would be very appreciated!