Oh, you didn't need to change it at all. I was just mentioning bcos Karina is in a tough position right now as she doesn't trust anyone in the group (and with what just happened, it's even worse). 

The thing with her age is fine! as I said, you didn't need to change anything from the start XD
Karina is a bit sensitive about the whole 'being called a kid' part because other officers look down upon her due to her age, despite her undeniable talent and intelligence.

[@Pezz570]