Elevator Encounter

 Earlier today, I had to make a trip to the pharmacy, and one of my roommates said that they would join me. We left our room and walked to the elevator, where I pushed the button and the door opened almost immediately (this almost never happens because we're on the 6th floor and it usually takes a minute for the elevator to get to that floor). We started to get onto the elevator, and there was a girl on there, which we put almost no thought into because we've ridden on the elevator with as many as 7 people in one elevator before. 

When we walked in, she turned to us and said in a hostile tone: "There's only supposed to be two people on the elevator at a time. There's a sign outside the fucking door!!" 

My roommate and I were taken aback by this, mostly because she had yelled this at us and we hadn't even fully got onto the elevator. We were not expecting this to come from someone in the dorm because nobody really follows the 2 people to one elevator rule (pictured on the sign below). 

We promptly got off the elevator and my roommate looked back and said "Sorry?" 

It took us a few seconds to really process what had just happened. We are halfway through the semester and no one has ever said anything to us like that before. We would have had no problem with it if she had politely asked us to get off the elevator if she was uncomfortable instead of cursing at us to get off. 

We understand there is that rule in place, but we were, in fact, wearing masks and we were going to keep our distance from her, so we thought it was quite rude of her to immediately yell at us to get off. However, we got off and got onto a different elevator, where a guy from another floor got on, and we had not had a problem with it, so we went on with the rest of our trip.