Why police woman after years of service screams like a little biyatch?

This is so annoying! Some directors, even today, think that every woman that sees dead body or blood will scream in total panic like a little biyatch.
And Theresa was a cop! But instead of being a cop, she looked like some dumb highschool broad in a bad slasher.
And even in general her character was very stupid - what was she doing dressed like a hooker on the streets? "I am on duty" she says. What duty? Telling man in cars that approach her she is a cop and they should go home? What? Ain't she suppose to arrest them? "Can you be more specific?". What an idiot!
Where is her backup anyway? Is she alone on the street working as a hooker? Seriously?
Her and other female characters are insulting and degrading for common sense. And I am a guy!
Besides that the movie is ok, I guess. The story doesn't make a lot of sense, but it is still ok.