Had it not been for the door locked, she would not have been unable to escape.
"I think the killer might have tampered with her wheelchair and got it stuck and couldn't turn." Benjamin said, "If so, she would not be able to escape by herself, would she?"
"No." Sophia refuted.
There was nothing wrong with her wheelchair, and it could move freely.
"Believe it or not, the wheelchair was burned down after that, and the evidence must be hard to find. I have a hunch that the killer was probably someone she knew," Benjamin continued his deduction.
"Hunch?"
"My hunch is always right. I used to use it to solve a lot of cases."
No words from Sophia anymore; in her opinion, Benjamin was at best a smug guy who had learned some detective knowledge from David but had no true learning.
Relying on intuition to solve the case, he might as well go to the fortune teller under the overpass to perform the divination.