Lois and the Sleepover (Sweet Valley Kids, No. 51)

Everyone in the second grade always teases Lois Waller for acting like a baby. And now Lois really feels like a baby. Ever since her grandmother died, Lois' mother has treated her that way. Mrs. Waller barely lets Lois out of her sight. Then Jessica and Elizabeth Wakefield have a sleepover party, and Mrs. Waller won't let Lois go. Lois decides enough is enough! She wants to be part of the fun, so she goes to the party anyway. Will Lois end up in big trouble -- or will Mrs. Waller see that Lois is growing up?