So says Madame Semele
to the witch-queen, whom she's duped into eating a truth-telling herb. Due to
the rules of hospitality, and the oath the witch-queen swore, the witch-queen
is forbidden to harm Madame Semele, even though Madame Semele tricked the intel
about the star out of her. But as we've seen, the witch-queen is very powerful,
so she gets creative and makes it impossible for Madame Semele to use her
deceptively-gained information to benefit herself. Well played, we suppose.