I am sorry, but I have to say that I don't see a sibling vibe. I see it as more of a parental vibe, mostly from Tony and Gibbs. Bishop gives off an annoying know-it-all vibe in a Cliffy Clavin manner to me. We are always hearing how much she knows, but nothing coming out of her mouth is brilliant. When she ever said to Gibbs that she was going to put McGee right on some assignment, I was waiting for a head slap. Instead, nothing was done. The probationary officer doesn't get to delegate work to her peers. Since she's been on, we've also had less time with some of the other characters. Abby, Ducky and Jimmy are relegated to one shorter scene per show. Tony has almost become a slapstick character.
NCIS has given us plenty of complex, interesting women during the series. I just don't find Bishop to be complex or interesting. I really would love for her to wander off at a crime scene and, while the adults are working, get lost. They process the scene and head back to work, while she is stuck to the floor at a Seven Eleven because she sat down while junk food shopping.