It is not much time later that Isibel elects to spend the hex from her supply minting Lycaelon. (It's not, really, that small a supply - the only trouble is she has no idea how long it will need to last her. Even if he can make no sustained hex output he can probably at least replace the one it took to mint him.)

"Moving pain across your mind should make sense now," she tells him, when she's done it.