Save Momma Opossum and babies

I am a licensed wildlife rehabilitator in Michigan. I'm also a single parent. This mother opossum was attacked by a dog and has 10-13 babies nursing in her pouch. The babies are so tiny that removing them and bottle feeding isn't a good idea as most of them will perish. Mom opossum and babies are being treated by my veterinarian and doing well but the cost keeps rising. My goal is always to release mom back into the wild after she recovers but I need help with her medical expenses.