Agreed, or she was a spectator in her own head and body, she knew what was going on, but all she could do is watch.
I never got that feeling. From what we could tell she was emotionally disturbed but her mental faculty was not compromised.
I think your interpretation of 'price' is too literal. It's not that it's a price she's paying for some service or something.
idk, most of the major fae players seem to have made a bargain that had Nemesis attached.(Sith gets left out as a non standard example, we don't know what they did to him to coerce him into being a puppet) Lea accepted the knife, Maeve straight up accepted Nemesis for the fringe benefits. Me thinks part of the fae having some dissolution of soul/real world existence gives them the basic choice to resist Nemesis, so they have to on some level accept it.
More to the point though, she says specifically not MY price, meaning someone else set the price. It's wasn't just THE price.
(Used to have a theory Nemesis was analogous to Ursula from The Little Mermaid lol. Making deals for souls and then trading them to others who shouldnt have them. With the advent of Ethniu Im not sure I was entirely wrong so much as incomplete in that thinking, after all, Ethniu also matched exactly how I thought Nemesis felt about humans and why.)