Hey Garrett! You'll be in G1 for now, but I don't think he will have any trouble tracking them down. They're only a few days trip out of Amaranthine and they were moving at a slightly slower than normal human speed etc...
Anyway. Genikon Zealas is former Dalish and leader of G1. Being that he's Dalish from another country, he doesn't know of all this werewolf stuff. However he would not hold your maginess against him. Since Garrett will be coming in after they had left the keep, Gen wouldn't have been briefed as to the matter anyway.
Kore is my former assassin, and you know Brennan too....former...dragon cultist (although he's not exactly 'former' in the same sense that the other two are). Good to have Garrett in the game!