Well, if that didn't confirm it, Elsa wasn't quite certain what would.

Taking a risk, maybe. Taking a chance? Biting her lip and then pulling one of her gloves off, she opened her shawl just slightly and ran bare fingertips across the inside of it. Where her fingers moved, frost spread, before she let the fabric fall flat across her shoulders again, hiding any evidence at all while she pulled her glove back on almost desperately, and then held her breath.

She looked very much the way she felt, now, ready to turn and run and never look back, if it turned out that she'd just made a terrible, horrible mistake.