First up, I love my flat mate, she's brilliant and I have never had even a minor problem.
So that's kind of why this is so annoying.
She went out on Saturday night.
I returned home on Sunday morning from Sarah's house.
She had gone out with the back door (which is paradoxically on the front of the house) which opens up on to the road latched wide open.
It is frankly a miracle that we were not cleaned out.
I should be seething, but I'm more just relieved.