Thanks! So I played it correctly. Finally beat this darn quest! And I'm glad that dwarves as still pretty strong.

Na'asiyah has the text, "Na'asiyah engages the last player." As soon as you advance to stage 2 she is added to the staging area, then she will immediately engage the last player. If you're playing solo, you are both the first and last player and she'll immediately engage you, forcing you to discard that Sneak Attack before you can use it to damage her. If you're playing 2-handed or multiplayer, you can use it to assassinate her immediately as long as the player holding that event is not the last player.

*******************!!!!!!

Thanks, I knew there was something wrong.

On the other hand, it only happens when she engages you, so if you draw it after she's already engaged with you it's fair game.