It just couldn't keep my attention for the first half. I'm usually interested in stories of infinite universes & traveling btwn them. But I was frustrated that Marguerite didn't think through anything she was told, & the "everything would be fixed faster if we all just spoke to each other" trope. Once revelations happened, things got more interesting. What I did like was that it wrapped up the whole story by the end, & left me feeling satisfied.