How we cite our quotes: (Chapter.Paragraph)
Quote #7
"Because," she told him, her voice taut, "now that you have saved my life, you are, by the law of my people, responsible for me, and I for you. Where you go, I must also go." (8.20)
The star is now extra annoyed at Tristran because he saved her life. The rules she lives by, as a star or star-person or whatever, dictate that her fate is bound to whoever saves her life, so now she has to follow Tristran around, like it or not. This seems like a crummy rule since she's not too fond of him (though luckily for her that changes).
Quote #8
"Also, I know the provenance of the topaz stone you wear upon a silver chain about your waist. Knowing this, and what manner of thing you are, I know the obligation you must be under." (10.30)
Lady Una has figured out that Yvaine is carrying the Power of Stormhold, a.k.a. that topaz stone that knocked her out of the sky quite unexpectedly. By whatever magic rules govern this kind of interaction, Yvaine is bound to carry the stone until the right person (a male from the Stormhold royal line) asks her for it.
Quote #9
Lady Una nodded. "Good. And I believe that you owe me payment for my services, now my time with you is done," she said. For these things have their rules. All things have rules. (10.164)
Rules, rules, and more rules: that's how magic and servitude and all sorts of stuff in Faerie seem to work. If nothing else, it's nice to know that she wasn't stuck being a slave for decades only to be let go without any kind of payment for working her butt off for Madame Semele.