One part of Totally Killer was, IMO.
The death of the mother bugged me. What’s up with the “fight the killer” trope? All those years to prepare and she didn’t have a panic room? The goal is to survive, and she had multiple chances to get away. By get away, I don’t mean run, trip, and fall either. 
Getting to a secure space to wait for the cops is better than attempting hand-to-hand combat with an armed killer. 
Yeah I know, “When you’re in a horror movie…”
