Nina rolled her eyes and turned to look at Matthias. She was very tempted to do something dramatic, but instead she flicked her fingers up. Matthias's pulse followed, quickening like he'd just run a brief sprint.

She relaxed her hand and brought his pulse back down to it's normal, even beat.

"I can do more interesting tricks, if that wasn't convincing," she offered, lifting her eyebrows and trying very hard not to smirk.