Diary of a Super Girl - Book 3 The third addition to this fun and exciting series is full of more action, adventure and humor. As always, it will keep you entertained through until the very end. Lia Strong discovers the power of teamwork and realizes that while being super is an amazing trait, with the help of others, she can accomplish so much more. Diary of a Super Girl Book 3 will have you laughing as well as wondering what is going to happen next. It is a funny book for girls and a series that teaches many life lessons along the way. A fantastic series of books for girls ages 9-12.