She takes a few seconds to piece this together, at first thinking that 'Gregor' is his - brother, maybe. And then context of the play connects with his first name and her admittedly slightly sketchy political knowledge and oh shit is he the Regent's son?

A tiny sound escapes her lips, before she clamps them shut and forces herself to look calm.

"I wasn't aware the Emperor played Tacti-Go," she says carefully, because that is the only sentence in her head that makes sense. "Or that playing it was his most endearing trait."

... Okay that last part just. Slipped out. Whoops.