I'm aware I'm making myself an unintentional liar twice in two days by coming back, but @damnedwhatever I hope you don't mind my saying that your reply to the anxious poster would have been a really good opportunity to try some of the things I had suggested to you yesterday.
The poster isn't silly to be afraid, or to want to be able to defend herself, but you've already framed her in your mind as being ridiculous. That's a really unhelpful perspective for a police officer to start from don't you think?
You could try to understand where the fear is coming from and start from the perspective that it is valid. Then you could realise that there are times other than an emergency that the poster might not contact the police because of that fear.
You could have tried to dispel some of the fear with something like a previous poster mentioned about explaining procedure. Maybe having more information would help reduce some of the fear, I think it would for me at least a little anyway.
Maybe you could help reassure instead of just tell her she's being silly.
I agree about weapons being used against the carrier, but again maybe you could have signposted to any resources you might have on self defence classes for women or something?
You could use these posts as an opportunity to learn and be a constructive force for the public view of the police, but only if you really listen to the posters and without starting from the "you're being silly" perspective.