I started working through the quest for Isobel. On the second phase of the quest line, "The Lost Symbol" I traveled to Stros M'Kai. I walked towards Aurelia, who talked to another NPC for a moment. Then the quest marker hovered over her, so I tried to talk to her. For some reason, the game simply will not let me converse with Aurelia. I've tried logging out and closing the game, and then logging back in, to no avail.

Is this quest bugged now? I'd really like to be able to complete my companion's quest lines.