Would it be alright for Psii's first reaction to be freezing up and staring helplessly at Dualscar?

No?

Oh, well, that's what he's doing anyway. He'd dozed off in the pile, though it was not the most restful experience. It was at least somewhat comforting to be with Signless.

It was less comforting to awake with a start to that hissing question that he doesn't quite process right away. What was what? He was going to hope a silent expression of abject terror was a good enough answer, because that's all he could manage for the moment.