Janitor has Days/Nights Confused

I, Cat, was still at work at almost 9pm. I was walking up to the front of the office and saw the janitor coming to the door, so I unlocked it to let her in. She came in saying something about being late. I thought she meant meeting someone.

No! She thought it was morning and she was late for work! She had only left about 5 hours before.

She kept saying something about going to bed "last night" with a horrible headache.... I think she meant a couple of hours ago and may have still been confused.