Aside from concerns about shock, neck bruising and nail file, er, pocket knife cuts would look hospital-worthy to a police officer. I’m glad the missing dog showed up in time to finally bark at and bite the bad guy with the knife.
There are points in the story that doesn’t seem to ring true.
No cop in his right mind would take the risk of not having any assault victim taken to the hospital. He’d be exposing himself, the department, and the city to a huge liability case if he were to just send the victim on her way. Not gonna happen.