John's attention moves from the staircase back to the woman. There's... Well. He never would have advised Arthur to try his hand at climbing these stairs, he knows that much, but the situation is different here. Benefit of having more than two legs, at least, and it still leaves him plenty of ways to grasp at the handrail for another point of anchoring. Peering upwards, counting, turning back—

"I..." That's an awkward pause, like he's gathering himself or thoroughly considering. It's one of them. "I might be able to carry you." It. Maybe. Look, he's not sure he can but he's got bulk on her by a good margin. If nothing else, he can make sure she doesn't trip going up, maybe.