I'm trying to get on the subway. There are four open portals...but one is blocked by a lady with a stroller and her group. The other three portals have a line of people queing up to use them.The group leader (her husband??) is talking to the subway attendant and she doesn't look like she'll be moving anytime soon. Is it rude for me to slide past her to use the portal? Is she being rude to block it? Is she being stupid? Am I being arrogant?