Here's a thought. SH is purposely dressed like a Sharran cleric because the Sharrans who did it WANT people to know she's a Sharran... maybe she's actually a Selunite Chosen One who they captured and messed with.
Regardless, if that's true, even moreso it makes sense to allow people the chance to recognize her as Sharran and decide whether they want to jump the gun and kill her.
