It's 6:47 PM when I step into the entrance of my building, keys still between my fingers, groceries dangling from my left wrist. A long, hot, thought-heavy day. All I want is to peel off my jeans, stay in my panties, and sip something cold on the couch. I slam my thumb on the elevator button and hear the usual hum. The door opens and I get in without thinking. I press the button for the fifth floor. But at the second, it...