Well, at least they seem to care, many don't give a whit.First I want to thank everyone for your responses.
My neighbor came through and offered to pay for the replacement of my livestock and has an invisible fence put in place. She said she was sincerely sorry. I think the initial reaction was just defensiveness and fear to my husband's threat to shoot their dog.
Regardless, I now carry a can of bear pepper spray at my side. Come spring if I can afford it, I'll be putting in electric fencing around the perimeter of my 4 acres.
The invisible fence might work, depends on the dog and how well the dogs owners can train it.