She does seem to complain a lot, especially when you put off the main plot quests. Like most nags, though, I found it easy to ignore her most of the time. A least some of the time her impatience is amusing.
I agree. Before I killed laiken I went back and finished all the other quests and every time I finished a quest she was like "I'm glad you helped helped him now go get the dragon stone." or "What bravery and valor. Wake me when you get the dragon stone."