[If the being wearing Harry took offense, it wasn't evident in the smile it flashed her at her response.]

Ah, mortal defiance. It tastes so sweet when it's crushed. I can alter the fabric of reality. One sliver of my essence would bind your soul to this form forever. You need not even offer willingly, it only makes it easier. It is my nature. I spread.

[But if she allows him to spread, and she brings him back with her...Aterat could be his, the world beyond the mirror that confounds him.]