The best way to tell if your cat is pregnant is to take her to a vet for an exam. However, if you are correct about the ten weeks then she should have had the kittens by now. I recommend taking her to a vet for an exam and to get her spayed.
Good Luck
Without actually seeing the incident, we cannot say what exactly occurred. Did you and your daughter miss body language indicating your dog didn’t want to be cuddled? Does your dog feel unwell?
Has she ever growled at the child, and if so, have those growls been met with respect or with punishment?
You need need NEED a behaviorist IN your home assessing the situation appropriately. Until then, keep the child on a short leash around the dog.