That's what makes Marcus laugh, a rough, angry sound and the snowball forming between his hands suddenly changes, an angry blast of wind swirling the snow away from him and into the air. At least it wasn't ice this time, but it's clear what he's feeling has a great deal to do with how to control this.

That the snow had been blown away is the only reason he's not immediately more worried about Elsa. He's thinking about what she'd said, though, about thinking of a time when he felt loved and the only person he can even begin to relate to a feeling like that is Mouse.

And he'd ruined Mouse. He had loved her so dearly and then abandoned her when she most needed him.

"I'm sorry," he says, still looking down at his hands instead of at Elsa. "That's... well, it's not the sort of thing I've had much of."