This was a pretty solid 3 star book for me right up until the end. I didn’t feel that Daphne nor Miles were as developed as characters in her other books and I was generally really uninterested and apathetic about their story unfortunately. I felt like jumping so many days throughout the story (from Sunday to Sunday) meant that we weren’t actually getting to SEE Daphne becoming a new person. We just got told she changed. Same for Miles. 
The ending was very solid for me - really comparable to real life when things just blow up.