They mentioned the stilettos because it seemed to contradict her story that they had gone there for a walk.
Maybe she's being slut shamed but the main thing I took from the article was that she was denying the incident too place whereas he admitted it.
Seems like a big fuss about nothing in my opinion. Can't believe the the police officer said he was shocked by what he saw.
I know a few police officers, some of the shit they have to deal with is awful. This wouldn't be a shocking situation to them.