Irina's neice

My oc Rin Jelavic is the neice of Irina and better then her in some fields of assassination but not all, so in some places Rin's aunt still beats her. She acts nice and weak around her targets, much like Irina but doesn't suduce them just becomes friends with them, and once she thinks she's close enough to her target she will attack and assassinate them almost flawlessly everytime, but there have been a few times that she has failed to assassinate someone in one blow and gotten injured in the process.

Rin's backstory: She lived with her parents until she was 5 and they got killed on an assassination mission, and for a few weeks she wandered the streets until Irina found her and asked her why she was on the side of the street and she told Irina what happened. Irina brought her back to her house and raised her to be one of the best assassins, and she became Irina's right hand girl when they do team assassinations.