It's just a rock! It is not going to swallow your hands. I promise I am not trolling you, and it is perfectly safe.

[ She could just explain it all herself. It's not like it would be hard to just repeat what she now understood herself. But there's just something so cool about it that she wants him to experience it, so she continues to stare at him expectantly, though she takes her hands back herself. Her fins relax a little, calming down from her initial excitement. ]

I promise. I haven't seen you in a really long time. I am not about to let you get hurt or have your hands stolen or whatever, not right now.