</font><font color="blue" class="small">( What do you do when your trusty companion is killed on your land by a neighbor's negligence? )</font>
It seems that nearly everyone who responds to this topic, in this thread and others, agrees that the driver who hits a dog should stop, notify the owner, see if anything can be done to save the dog, etc.
Now I don't really disagree; we lost a border collie to an idiot who went flying down our road at twice the reasonable speed, and of course never slowed down, so I understand. But I'll just suggest something else to think about.
Suppose you hit a dog, or cat, and you stop to try to find the owner, help the animal, or whatever. An injured animal may try to bite you or may not. On the other hand, if the animal is dead, what good can you do for it? Then you find the owner. Maybe hitting the animal was your fault, and maybe it wasn't. But is the owner going to agree that it wasn't your fault? Not too likely. The owner is going to be emotionally upset, and understandably so, and may or may not also be quite irrational. If the animal is still alive, the owner is probably going to expect you to pay all medical bills, whether it was your fault or not. If it was your fault, that's a reasonable request in my opinion, but not if it was not your fault. And regardless of fault, or whether the animal was killed or only injured, the owner just may be irate enough to attack you physically, so it may turn out to be a dangerous situation.
In the case in this thread, did anyone see the accident (I say accident because I'm assuming she wouldn't hit the dog on purpose)? Was she driving unreasonably fast? Was the dog standing in the road where she could see it, or did it run into the road when she didn't have time to stop or avoid it? Are you currently on good terms with your neighbor? Will you be on good terms with him after the confrontation? It's a very sad and unfortunate thing to lose the dog, but nothing is going to bring him back.
Just a few things to think about.