Penny Rattlesnake Bite

Penny was bit by a Rattlesnack this afternoon out hiking. Her face is swelling quickly. I rushed her to the vet and they are giving her the Rattlesnake anti-venom along with painkillers and fluids. She needs to be kept over night to watch her blood levels and have fluids all night to assure she is okay. 

I love this dog and consider her my family. Any help would be greatly appreciated to help save her life.