oh wait, i think i've made progress.. i forgot i saved my game as Celica and Evie was taking the Count's maid to the forsaken keep while she was looking for some fabric. Then Celica got taken over by some living armor. I think this is Glacie. Maybe.
Yes! That's what i had to do. Had to get Glacie to appear and get her logged in my Character event log. Then talk to fortune teller to ask how to improve relationship with Glacie. Which then in turn triggered the hint from the barkeeper to go to the fire temple. I think asking the fortune teller for relationship advice on nel is what triggered the event with Evie and the Maid to run into Glacie.