Zoe blinks at the Burnett book, next to a Devereaux, next to a Daniels, and then her eyes flick back to Lexa's face. The ducked head, the slightly worried expression, like she didn't want someone to figure out...

Oh. Could it be?

"Do you mind if I help?" she asks after a moment. "Otherwise I have to take this back to my cousin, and she'll probably be sending me out to pick up whatever she's craving. Pregnant," she says with a faint smile. "And she feels bad about calling her husband, you know."