<human>: So, I work at a homeless shelter. I'm a 5'4 girl, and my shift is from 1 am to 9 am. I work my shift completely alone and don't have much to do until earlier in the morning, aside from signing people in and doing laundry. Everyone sleeps upstairs, and the downstairs is completely empty during the night. There had been movement on the downstairs camera, but it was dark and I thought I had been imagining it in my fear. Downstairs there is a huge mess hall, and a lot of side rooms. I have to go downstairs and through the mess hall to get quarters for the laundry, and had been putting it off until it was a little bit brighter outside since I was too spooked to do it right away (I know, that's really dumb). So, it's about 5 30 and there's finally a dull blue light outside. I decide to go down and grab quarters. I run through the mess hall and go to the side office and start unlocking the door. As I open it, I turn around to see a woman standing a few feet back facing me completely blank faced. I felt my jaw fall and was so terrified I couldn't even speak. I thought I was having a heart attack. I ran into the office and slammed the door shut behind me. This lady proceeds to walk over and annoyedly knock on the window, asking what time it is. I snapped out of my terror and realized she must have been assigned a downstairs bed for whatever reason, and the person who works before me forgot to mention it.

Can you condense the text into a few key points?
<bot>: TIFU by reading scary stories, working night shift at a shelter, and making a total ass of myself in front of a harmless resident.