A Little Ray of Sunshine - Lani Diane Rich

EJ does a freak out and leaves her fiancee with no explanation. Six years later her fiancee's brother tracks her down because his dad and her former child celebrity mom are getting married and he says her mom won't marry him unless she's there. The same day this happens a girl who claims to be an angel said she's been sent to help her out. Very sweet, sad, funny book. This author is becoming one of my favorites.