You know, we could discuss this all night, and it would be reminiscent of the conversations many gay people have endured over the years...
'I just called you a dyke, you are a dyke right? A dyke is a lesbian... You are a lesbian, why are you so offended ..? Stop getting your knickers in a twist... can't you take a joke..? Haven't you lot reclaimed that word anyway..? So it's not offensive then is it..? You're so easily offended, touchy eh? ..'
You can get bet your bottom dollar thus police officer ensure this of conversation day in, day out. And maybe, it sounds like, she called it wrong this time after being at snapping point after snide abuse levelled at her most days of her working (and probably non working days) of her life.
You might want to go round in circles and condescend and talk in riddles about how something insulting or abusive is not actually insulting or abusive, but I have no time for such bad faith argumentation.