I did enjoy this story, but only until I got about one third in when for some reason it turned into a melodrama which never quite seemed to fit.
I agree I liked the transformation of the character of Mary,and I could see this as a real possibility.
However, new characters for me were introduced but never quite developed and with one in mind in particular, I was left wondering at the end of the book why the character was even written in the first place. Without giving spoilers, I think the author tried to get us to second guess ourselves with what we thought might happen to keep us interested. Herein lies the problem. I think I would have found what I thought was going to happen far more interesting than what actually did.
I am glad I purchased this book, but by the end, I felt like I had read two different stories from two different authors.