How does making him feel like his skin is suddenly several sizes too tight work for showing her annoyance?

Well he continues to 'scream', apparently not finding that motivating enough.

How about a brief blast of lightning?

Then he will make a 'louder' noise, as you might expect someone to do upon being struck by lightning.

And if she applies lightning so as to render him unconcious?

… He doesn't seem to fall unconscious with the regular amount of lightning, at least.

She has lots to spare, that's okay.

It takes quite a lot of lightning before he stops screaming.

… Takes a bit more before he falls unconscious.

Tough guy, huh. Good for him.

"So, we were going to do something about Blue?"

"… You could try poking him?" suggests Thario.

Shrug.

Nudge.

She does not freeze!

He seems quite unyielding. As does his shirt, as does his skin, as does his position.

He's looking straight ahead, he's not blinking, he seems quite mid-stride.

Time seems to have forsaken him.

"Doesn't seem to have done anything."

Thario walks in front of him and looks at his face, in case it's just that his body is frozen.

Blue's eyes do not seem to be moving, either.

However, while Thario is watching him, he completes his stride and then jumps back, noticing Thario in front of him.

Thario also jumps back! Apparently Rhunes can do that rather quickly! (Or maybe it's just him.)

"I'm guessing it hasn't been more than a second or so for you?"

Blue frowns. "I'm not sure," he says. "Uh, both yes and no are the answers, I think."

"How so?"

"Feels like I've only lost a second, somehow I know it's been longer."

"Strange. What should we do with the third of you?"

"I don't have any idea what his motives are," says Thario. "He just– looked at me like he wanted to kill me and so I ran."

"You didn't consider just letting him?"

This is probably a joke.

"I don't know what benefit I would get out of it," he says, running his hand through his hair.

… Does Blue stiffen a bit? Possibly.