If you get to hit your attacker ALWAYS hit them twice. The first whack usually stuns, Adrenalin kicks in and they come back even angrier.
Locked in a room, smash or open windows and start throwing stuff out, things that will smash, make a noise, attract as much attention as possible.
I was taught self defence by an American woman when I was a teen, never had to use the above but never forgotten them. Pity Laurel didn’t have the same teacher 🤦♀️