This is an amazing read. I would recommend it to any middle grader dealing with LGBT issues. 
 Story below so people know what topics this covers: 
 The story is about a 12 year old girl who has a mom that had her with a donor. Later on in life, the mother gets a girlfriend and it causes June, our main character, to be upset like most children would be after so many years of having their one parent to themselves. The fact that it is a homosexual relationship causes June to experience bullying and is unsure of her place in all this. 
 The book gently handles these topics and doesn't turn any specific character into a bad guy, although there are definite anti-gay characters in the book, they are depicted as human instead of caricatures.