"Excuse me, what are you doing in my house?" a voice suddenly asked.
Biff and Tiffany turned around and saw someone they had never seen before.
"Oh, Biff. I didn't know you were here. When did you stop by?" the person asked. Whoever it was, they obviously recognized Biff, but only as a neighbor.
Apparently, since Laura was no longer herself, she no longer lived there. Her husband had unfortunately passed away several years ago, so when Laura was gone, that left no one occupying the house. It seemed that someone else had taken ownership of the house in her absence.
"Will your grandchildren be joining you?" the new owner of the house asked Biff.