I can hear her son now. But they were nice little harmless puppies who never hurt anyone. I bet with all the publicity that is out there about this killer breed that he really wants others to believe that he had no idea that they could or would kill someone.
Charge him with second degree murder or at least negligent homicide and send his butt to prison. He should be held responsible for this just as if he had killed her himself. He knew these dogs can and do kill just like all the other owners of these dogs should know.