My dog was just bitten

My dog was just bitten by an off leash dog while we were on a walk. She is bleeding pretty badly in the neck area, currently in the emergency room. Had both of our dogs with us and they're reactive and will bark at other dogs but were both on leash...what do I do? I understand mistakes happen, and I feel sadly for the other owner but please advise. I wouldn't want the other dog to be put down because it was the owner's fault that he or she wasn't on a leash so I guess my question is, how would you handle this?