User blog comment:Zippertrain85/Top 10: Least favorite NPCs./@comment-6336669-20130819074943/@comment-9062114-20130820041215

That's probably wat drove her to join the Legion in the first place. Might've just escalated from there. You can actually learn from some Stormcloak soldiers that they were injured by some Imperials long ago. Torygg died in 4e 201.

It wasn't revenge. It was to save the people from a ruler who did nothing to help their plight.