Bad. If Yseult were given to speaking before she thinks that answer would've been stepping on his question's heels. Maybe there's some hint of it, torchlight highlighting the twitched clench of her jaw or subtle tightening of her mouth. She's been tense since they got down here too, not thrilled by an extended stay underground in the dark against her will. That's hardly notable; no one is. But there isn't much room to ratchet the tension up within the narrow range of physical tells she allows.

And she's not given to speaking before she thinks. So she asks, "Have you done that before? In a non-combat situation?" Personal feelings aside, force magic doesn't typically involve much precision.