"...I may have genuine existential bad news for you." Erin's voice isn't flippant this time; she's trying to be gentle. This news can indeed be bad. "...We've had people who aren't supposed to be able to die, aboard. They died. Immortality isn't one of those things the ship lets you keep around. You can be hard to kill, you can be a puzzle to kill, odds are you're still quite powerful...but if you're used to laughing off mortal weapons, you might want to. Stop. Being used to that. For your health."