The moment Jim got up to his mom's floor, he quickly walked out of the elevator and straight to where he knew his mom's office was. On his approach, he heard what sounded like moaning. It was apparently causing a bit of a disturbance to the other employees, judging by their looks of disgust, confusion, and interest.
Jim walked right up to the door and was about to knock, but then decided to just walk in unannounced. Whatever his mom was up to, he obviously had to fix it. He didn't have time for etiquette.
So with that, he opened his mom's office door and was greeted by the sight of his mom (again totally topless) fondling the exposed breasts of another woman, who in turn was also fondling his mom's breasts.
He just stood there, mouth wide open.
Katie turned and saw him there, but instead of stopping what she was doing, she kept doing it and said "Oh, Jon, there you are. I tried to call you. Your sister is in the hospital."
"Teresa's in the hospital?" he asked, weakly. His mind was too focused on something else right now to fully grasp what she just said.