I think she took Tim's comments the wrong way. She viewed him saying she didn't have that killer instinct as an insult when in reality it's a compliment. He's saying she's a good person who cares for others, and that's what makes her a good cop. UCs have to be coldblooded, borderline sociopaths, to be able to to the job well. Telling someone they're NOT a sociopath, isn't a put down.
Well the “ouch” just before this video cut off was the beginning of her immediate response that played Tim like a fiddle and did to him every single thing he just said she couldn’t do, in brutally hilarious manner, so there’s that.