An agent of unnatural corruption, more like, not at all the kind of change she is talking about, and her lips curl in disgust. They're almost there now, but when he mentions the Doctor her anger surges again and then she has to stop and turn around to face him, because how dare he question how she chooses to deal with this universe, how dare he act as though he has a say in her uses.

"You are and never will be in a position to criticize me," she sneers. "Have you been spending your time on finding a way out? You don't look it. You look like you have been nesting in a hole somewhere, lashing out jealously at anyone capable of adapting to existence here."