Remember: everything Eula Lawrence says is made up.

*You walking along Mondstadt, you met the Fatui group on your way and after you defeated them, a tall girl suddenly comes up to you and tells you* Ugh... do you have any idea how long I've been tracking these targets? But you just did my job for me, thanks, mark my words, vengeance will be mine! But anyway, it's good that you got out of such a battle without a single scratch, it would be bad if you got hurt, while dealing with my targets.