What did I see?

As I winced in pain from the heavy metal door practically crushing my hand, I looked up and through the door window saw something curious. I saw someone opening the uniform storage room, and at first I was confused as to why someone was there. But soon recognized the black and maroon t-shirt that had our high school's motto, and knew it was our uniform inventory manager. She was a kind substitute who's worked with the uniforms since she became a regular substitute at our school. I didn't want to get in trouble for basically breaking and entering government property. So I tried my hardest to enter quietly. However, we all know that heavy metal doors, that are older that your parents, are not the quietest of doors to open, especially since the pavement outside the doors is uneven and scratched the base of it in certain places. She turned around in a jerking motion startled to see someone other than her at the band hall so early; she hadn't expected anybody else much less a student. She greeted me with a started good morning, before turning back to the open storage room. And I apologized for startling her and asked her why she was there so early. She gave an honest response that she was excited to start marching season. It was the first day of summer band after all. She asked me to help her move some tables the directors stored in that room, dispite her best efforts to prevent them from putting anything unrelated to uniforms in the cramped room, outside in preparation for the students to receive name tags. I agreed to help after all I was afraid of her telling on me, even though I know she would never complain about students arriving early. When we finished moving the tables she thanked me and asked why I was so early. I responded in shame I'd left my instrument at school over the summer and needed to find it before anyone found out.