He knows what's being asked even if he can't process the words fully. Shrugs a bit where he's curled against Jim. He's not sure how to describe all the many reasons he'd hesitate to share what he's done here.

Besides, the atronach is only a part of it.

"...It's risky. This. Wasn't sure I could do it at first. Had to keep it out of sight. Knew it'd be... well. Dangerous." He winces against Jim's coat, already anticipating how his husband will respond to that word.