Holly's Heart: Collection Three (Books 11-14) by Beverly Lewis

Thirteen-year-old Holly is dealing with the major concerns of every preteen and teenage girl: boys, family, and school. But with the help of her friends and her faith in God, Holly is able to survive her first boyfriend and her first breakup, a crush on her student teacher, and a new baby sister "invading" her house. Volume Three features Freshman Frenzy, Mystery Letters, Eight is Enough, and It's a Girl Thing.