It is a dizzying moment of uncertainty, for he almost spits it out—how soon she'll die, how soon she'll fall out from between his fingertips.

But she won't. Not here. It is as Tzilan said: Dorian Gray is young here. As long as she stays in this world, she will live for a long time.

So instead he warns her, "Don't make that too soon," almost harsh in the protective scowl (sulk).