"Necessary? Yes, I think so. I got the impression you wanted me not to kill you, after all. Not that I still won't if you keep taking notes on me, but you can't do that now." A benefit she hadn't thought of until now. She wasn't entirely sure why he'd decided to change to this form--perhaps to fight her better? That seemed to be the only advantage of the trade-off, as best she could guess from what she knew about him. Her staff was still right by her, though, and there were always teeth and claws if necessary.
She tilted her head. "Is there anything else you want? I'm an important person and I have places to be." Places like at home in bed, with a mug of something hot and the sound of Gallagher banging around in his kitchen. But she didn't have to tell him that. It was perfectly acceptable to lie to the lower class.