Kol's right, you worked to gain our trust, she never has. Everything she has ever done has been motivated by pure selfishness.
Besides, Matt killed Finn, thinking it would kill all of us, Stefan was in on that plan, along with I don't even know how many other plans to kill me, and my darling brother daggers us whenever he has a tantrum.
Matt and Stefan have both apologized to me for their parts in things, as have you.
Niklaus hasn't, which is why we're currently not okay, until he actually gains some maturity and mans up.
And Katherine really really hasn't. She's talking to us because Elijah wanted her to, she probably doesn't believe she's ever done anything wrong in her incredibly self involved life.