Nothing good ever comes of love. What comes of love is always something better

I don't want to be the Starwife!" Ysabelle protested. "It isn't fair!"Her mother wavered; even now, it was not too late."You must fulfill your destiny," she said at last. "The Starwifeship is already yours. All that remains is for you to bring the amulet and the Starglass together. Once that is done, the power of the heavens will be yours to command. Use it wisely, for the forces locked within the Silver Acorn may be used for good or ill. On your journey, never be parted from it; always wear it about your neck.

I used that black magical elixir as amulet against all bad things and thoughts for that day. On the other hand, it was a liquid talisman for everybody else, to save them from being strangled by me.