I'm finishing up the Imperial questline, and Tulius told me to head to Eastmarch and speak with Legate Rikke. The quest marker appears above her head, but she won't let me start the next part of the quest. She just talks to me about why she fights. Is this a bug, or am I missing something? I've tried reloading, and fast traveled away and back to let the cell reload, but still no luck. Any thoughts?