[at first, she's visibly excited that he's actually... continuing, practicing, but she picks up on his expression for once, and she puts a hand on his shoulder.]

You did really good! Only one of my friends has ever actually managed to learn it. Trixie tried, once, but... Y'know. [grins, wrinkling nose.] She'd be so mad if she knew I was telling people from other worlds that she can't dance. But, she's really bad at it. Two left feet.