Oh, Madame Masque is a lying liar who lies. She has no intention of letting Kate go – the entire point is to keep dangling hope in front of her, making her think that there’s a point where she’ll be let go if she’s just good enough, but Masque is never going to let her go and has a life model decoy set loose to take over Kate’s life.
There’s no way out for Kate and no reclaiming her independence. I think I might have been a little too subtle about that.