Rarity is clearly reacting badly to all of this, and despite everything weird going on with him, Sans still has the headspace to be sympathetic.

"Hey, hey..." he says gently, moving a few steps towards her, reaching out like he is about to offer a comforting gesture - only to pull back when he realizes that a skeleton touching her might not be something she'd welcome, considering. The thought makes his non-existent gut turn, and he takes a step back again, looking just a bit humiliated.

"It's gunna be fine..." he says, starting again slowly, though his gaze has wandered away from her in his embarrassment. "Its gunna take me a minute to get things checked out on the other side, so you can pack your bags and whatever, and then I'll be back to pick you up. They'll be able to handle your ship when we get there."