Lucy Knisley

"Jen moves out to the country and has to put up with her mom and her mom's new boyfriend, as well as his kids. Suddenly part of a larger family in a new place, Jen isn't sure there is a place for her in this different world"--Provided by publisher.

Fifth-grader Penny writes a series of letters to her future sibling, including facts about their Oakland, California, home, questions about whether their moms will ever marry, and especially that he or she is loved.