Katie was amazing in all the roles that I have seen her. From the suffering homeguard to the Isolationist elf who would only talk to some of the PCs depending on who they were and their personalities.
I also voted for Gwen as she played the Fatespinner a few times and I think she has continuously improved this character and She united the Earth Weavers very efficiently during our meeting.
I wish Conner stayed for the full weekend...I have always enjoyed the character he's played.
I do agree with Bota, Katie kicked some *** with her RP this weekend.