Cinder's Vet Bills

Cinder has a hole in her right leg, under her tail. She needs a vet visit to stitch up the hole. I can see muscle tissue through the hole/wound, so I won't be posting pictures here. However if you need proof, please message me privately.
My mother is currently unemployed, so we only have my paycheck and centrelink, both of which go to bills, gorceries and car repayments. We are living week to week and didn't expect this to happen. Please help.