What's up with Ezmerelda

Ezmerelda is a monster hunter and former apprentice of Rudolph Van Richten.

Ezmerelda refused to tell Balthazar Bane, Drake, Pyrrha Strazni, and Rowan about her relationship with him and was seen rummaging through the remains of Kazan's Tower with a piece of paper.

Ezmerelda gave the party her falcon's whistle if they need to contact her.