Host by Erin Lee

At the end of Alters, Lola is out of Rosewood, thinking that her alters have merged into one personality. She misses them, but she is in the process of trying to move on with her life outside of the mental institution. In Host, she wakes up one day with foggy memories of one of her alters (Clare) having resurfaced. They only tricked her into believing that they merged. They now want to experience life outside Rosewood to the fullest...
In this installment, Lola and her alters have a larger variety of experiences. She gets reacquainted with her family, and she learns about the Internet and all it has to offer. Her experience is so disjointed because all of the alters are eager to get their turn in the real world. Lola is more confident, but she is also confused and fearful that her family and her doctors will discover that her alters did not merge and send her back to Rosewood.
The experiences of the alters when they take turns controlling Lola's body are quite heartbreaking. Since two of the alters are male, this causes some nasty name-calling and even some physical abuse at one point. Other people whom she or the alters confide in treat her like a "freak" in some instances. She does have several people who are truly kind and supportive, which is really wonderful. There are some revelations about her family in this book that put things in an entirely different perspective as well.
In this book, where Lola is "free" for the first time in 30 years, we see more how people with mental illnesses are received, and it is truly heartbreaking. This is a wonderful series, and I look forward to the next installment!

Purchase the books in this series by following the links below:
Book 1: Alters
Book 2: Host (Coming August 26)
Book 3: Merge (Coming September 9)