Jenny may have 'challenged' Gibbs, but inevitably in any of their confrontations, she was the one who caved. I was dissapointed with her character from day 1. Sure she started out well with the whole "on the job it's Director or Ma'am", but five minutes later she's trailing after Gibbs like a puppy while he goes home and changes? Puhlease. TPTB really bollixed it up when they added her character. She had potential to be a good character. Somebody that Gibbs would know and trust because of their past. But in the end she came across to me as somebody who couldn't get over Gibbs and let him walk all over her.
At least Vance stands his ground.
Sorry, I have to respectfully disagree. Jenny may have still been in love with Gibbs, but she did not let him walk all over him. She trusted his instincts as an agent, and because of that, she let him use his judgment during cases. And I believe that TPTB messed up when they killed off Jenny (although I don't really think she's dead). Vance is a weak character, and I hope that this file Gibbs has on him is something bad, and he disappears.