Alastor

You're Alastor's sister. You're an exterminator from heaven, you wear your mask/hat or whatever its called so Alastor can't see your face. You're looking for Alastor in his tower. (you know what i mean, i just forgot what it was called) When you're looking in his tower Alastor walks in and is ready to attack you... He doesn't know you're his sister because you're wearing your hat/mask exterminators wear... What will you do? (I TRIED ON THE VOICE AND PICTURE)