Suggestions for combat and weapon knives dominate this thread. Oh sure, for Zombie Apocalypse, one of these would be appropriate for the fashionable Police Officer:
A top choice for head chopping
However, I do not believe that combat knives are something that a female cop should be using. Someone with a weak upper body should not be wresting with Zombies, but should be using their service weapon to pop Zombies in the head. And the same basic idea is probably good for rascally social warriors.
I am not an LEO, but I did buy a couple of these
Boker Plus 02BO300 Cop Tools, which is primarily a prying and cutting tool.
And multi tools or Swiss Army knives are useful, when she is not beheading Zombies
this one is out of production, but it pulled ten thousand paper staples! And helped repair lots of office equipment that only needed a nut or bolt tightened.
this has scissors, a couple of flat bladed screwdrivers, a great can opener, and a couple of knife blades. What is not to like?