Angel was admittedly tired, despite his enhanced demonic stamina. Staying up during the day with his sister and following Cordelia's visions at night was starting weight down on him. He needed to rest - rest during the day like a good vampire should. But there in fact laid the problem: Kathy didn't know he was a vampire. He'd intended on telling her when she'd first arrived, but the apparence of the Wolfram & Hart lackeys that had gaped at her from the gates had distracted him, preventing him from doing so.
He'd been in the process of shutting the computer down and heading off to bed, when his sister glomped him, proclaiming that she'd made breakfast. While Angel was a pretty good cook himself, he hadn't eaten in years - and that fluke of a time when he'd become human around Buffy didn't really count. All that had told him was that he disliked yogurt and liked chocolate. But, those two things both tasted like cardboard with the crude sense of taste that came with being a vampire.
Still, he smiled at her and asked in the accent he used for her benefit, "Really now? And just what didja make?"