By midnight her phone and toothbrush are likely at full power and you can turn off the power to those outlets without interfering with the tenants' use of those devices. 

You can have cars, toothbrushes, underwear, roommates, at multiple places.

If/when the room vacated is filled with another paying tenant, then perhaps I would consider a pro-rated refund.I mean, really--a student got into an argument (non-physical) with a roomie and then their reaction is they took their toothbrush and blankie and went home? 

Stumbled on this service, which appears to be an interesting business model in itself and got me thinking about how this might work for convenience items such as toothbrushes, deodorants, or other items that are not necessarily stocked in the unit, but are often forgotten by guests coming to stay: https://www.thehost.co/Anyone using services like this?

Clean the grout with bleach and a toothbrush. 

Verify (with more pics) no toothbrush in the bathroom, no, or minimal food in fridge or cabinets, empty (of clothes) closets.

If there is no good food in the refer, no prescriptions in the med cabinet, no toothbrush, no shoes, nothing with obvious value, all signs point to abandoned property.

You will also need to take apart the blower and soak the fan -- the residue will be in the blades and you will need to clean it with a toothbrush or other small brush after you soak it.

It's particularly effective for killing mold and mildew.Step 6: ScrubUse a scrubbing brush or an old toothbrush to scrub the moldy areas vigorously.

Tell her you did in fact paint her apartment windows you did switch her paperwork around and print up fake receipts and you secretly used her toothbrush to clean the streaks in the toilet .