I still can’t see how it would be a police officer on duty picking her up? For what reason? There must be a motive? Unless he has committed other offences and got away with it!
The only thing that makes sense to me is that they already knew each other (he potentially lived at the flats), they agreed to meet up and things went wrong
Sexual predator? Seems quite a well known motive in such cases? I doubt it was for jay-walking or dropping litter.