[@blueflame]
Jirah looks embarrassed.
"Eep! Erm... sorry... You just look...out of place? I don't know, I'm sorry."
She has the shame to look abashed for making fun of Jack

Her eyes then widen as Jack accuses Dracul and herself. 
"Wha- I-"
Her eyes then narrow and turn bright green, fur sprouts along her arms and legs, her nails extend to claws and she grows several inches as she partially transforms.
"How do you know that?! Who are you!?"
Up until this point, Jirah has made a point to try and hide her Were-form from those around her, even those she trusts, so someone just outing her on it is startling and suspicious.