It's happening to both of them. It's not internal, not a malfunction of his code. It's just this place.

"Of course."

It's hard to say whether the mutter is directed at himself, or her. Still, the rigid tension in the android's frame bleeds out a (very) little. 'Spells' draws a slight twitch of an eyebrow, but considering the human is literally healing before his eyes, he opts to postpone any discussion of impossibilities.

"Androids don't feel pain," he informs her instead.

Just in case she was wondering.