[It's clear that there's more to it. He's definitely been holding onto this for a long time and Rey is not the only one he's had this conversation with. Must be exhausting, having to tell people you know that you're going to die horribly every time. Giving away a handy pamphlet would almost be easier.]

But... that is why you puke that black shit whenever you try to heal something, right? That's not supposed to be normal?

[Sorry, Carlisle. She's still calling it "black shit" instead of "bile".]