You meet Varea first during the main story line at the borken fort in Amagal, after which she is in Manastyr, the captial of Amagal . She's shortly at other locations as well later but in the end of the current story line she stays in your castle. You need to reach that end of the story line for a dialog with Chiyo to trigger then mentioned event with Varea.
If you're playing a 19.06.11 version from before I fixed the bug you might have the issue where you need to talk with Dea from the right for the movement to work while talking to her from below causes a freeze.
But to say for sure what issue you have, I'd need a bit more details about where you are and what happens. ;)