I actually REALLY liked Kate in this episode. You would think the rest of them, after 2 seasons, would not mumble so much anymore.
And I know it was likely producer driven, but who goes to someone's house for dinner and then tries to start crap at the dinner table? Chapel could have waited until they were done eating, OR perhaps the could have shown up on time and hashed it out beforehand. That was tacky tacky tacky.