Lucy rolls her eyes at Peter's comment, but she doesn't contradict him. She just points out, "I said the right woman." Which doesn't necessarily mean Gabriel.

Once Gabriel changes though, she gives him (her? him) a considering look. "Attractive," she merely comments, not trusting herself to make a more elaborate response, given the dream. More attractive than she finds Gabriel's regular body, actually.

Although really, so far her consideration is mostly to get Peter flustered, rather than really thinking about it. She still has lingering doubts regarding Gabe, though she's warmed up a little since noticing Peter seems to like him. She's not sure if the revelation he's an archangel is a point in his favour or not -- especially given the current situation.