talking bathroom lady strikes again

I currently share an office with the law clerk here, and just now she came back into the office after about a thirty-second absence, having gone out into the hallway and seen Talking Bathroom Lady on her way to the bathroom. TBL said, as she is wont to do, "HI THERE! HOW'S IT GOING!" (I could hear her from in here), and my office-mate turned right back around and ran back in here rather than go into the bathroom with her. She says: "I can hold it." Then, after thinking about it for a while: "She doesn't know WHY I went into the hallway, after all. I could have been.... uh...."