There's no question what he meant at the end of that first discontinued thought. Nothing about Rey screams that she's a normal person hailing from a stable life, or that she came into this world through normal means. Even someone like Carlisle had to have figured that out when he sensed the synthetic components of her physiology.

Still, one doesn't always assume. And Rey does not let go of that bottle, just keeping it in an unmoving grip.

"That's hardly your fault."

No. Knowing just a little fragment of that aspect of Shadow's history only darkens her already soured feelings about the situation that little bastard has put this man in.