She's a tactile person; she has to touch what she sees sometimes, just to be sure it's real. Touch was one of her most useful senses, even if she only had one hand to use for it. Sans's body is warm, but smooth. It's an odd feeling, like a bone warmed by sun and weathered by sand. It makes her almost... nostalgic.

His answer makes her blink with surprise, uncertain if she had heard him right.

"...You mean you were born a tiny baby skeleton to skeleton parts and grew into a skeleton kid, then a skeleton adult?"