Much as I love dogs, I can't bear the ones that the owners won't control.
Over the years I have been bitten, knocked over, covered in mud, had food taken, an expensive glove ripped to shreds and scratched by dogs. I am aware that it is not the dogs' fault and it is up to the owner to train them.
If my children had done half of the things that some dog owners seem to think are acceptable they would have been in serious trouble.
Most dog owners are very responsible and their dogs behave properly but there seem to be a few who can't or won't see that their dogs are a nuisance. Your DD is most certainly not overreacting it is the other grandparents who are under-reacting to what was an inexcusable situation..