*shifted back a little when you turned to go, intending to huddle up with her people and give hushed directions—to the effect of keep to yourselves and let them dig themselves in deeper, if they want)—but now finds herself staring in open-mouthed shock at your back (and you've frozen in place, but she can't possibly tell what you're thinking with your back turned and your face hidden)*
*just when she thought this couldn't get any more ludicrous*