I'm home for the rest of the evening so if you wanted to tag it out I'm up for that otherwise, hand waving is perfectly fine! I'm not entirely sure she'd go the route of a corsage, but she would promote getting Hiling a bouquet of flowers and a box of chocolates if he really wants to try and impress her.
But the chocolate only if he slips that it's Hiling he's asking out but then she'd probably feel protective because of Ribbon's disappearing!