(Please pardon any errors, I'm posting this in a hurry!)
My mom just found a wild garter snake that has been partially crushed by a vehicle and is still alive.
Apparently she has quite a long portion of intestines (and, what my mom described as, eggs?) protruding from her body. I haven't actually seen the snake yet, so I'm not certain how accurate my mom's description is.
I'm just wondering if there is any hope for this snake at all. I realize the best person to ask would be a vet, but a vet visit just isn't an option; the ones here don't do anything but dogs and cats.
I could try to get some pictures of the snake if that would be helpful?
If there is no way to help her, is there a way to humanly euthanize her besides a vet? I don't want her to suffer any more than she already has.

Thank you!