Help Save My German Shepherd

Hello my name is Harland. While out taking Bella my German shepherd out for a run she happened to encounter a rattlesnake, she took a dry bite to the upper lip and a venom packed bite to the lower lip, I rushed her to the vets where she is now hooked up to an I.V. Her lip is horribly swollen and I'm unsure of her condition. The bill has already racked up to over $500 and may continue to build depending on her condition. Please help me save my dog I love her dearly and she means the world to me.