It was a page-turner for me. I had to finish it in two days because I could not put it down once I got started. Anyway, I really liked the character of both Lily and Mabel. I think that it's not what happens in life so much as how you imagine what happens, how you color events. It's rather like the idea of the changeling when I think about it.
Substitution is involved.
While I enjoyed the book about Lily. I thought the author could have developed the character of Mabel and wrote an equally intriguing novel about her. While I sometimes disagree with what you have to say, your perspective is valuable and I look forward to it with each book. If Lily is supposed to be Hermia with Martin and Ed as the two men pursuing her, I don't see the relationships developing in anyway similar to the comparable relationships in the play. Nor do I see any compelling perversion of the action in the play in the novel.