Here's the blurb for Liberty Belle:
On the same day she turns twelve years old, Savannah moves away from everything she’s known in sweet, sunny Georgia to preppy Washington D.C. Not only will she miss her best friends Katie and Tessa, Savannah will start a new school. She soon discovers that her schoolmates love to brag—about their clothes, their parents’ governmental connections, and even who has the in with the school authorities.
Unhappy and lonely, Savannah decides if she can’t make life better, she can at least make it sound that way. Soon she is living in the childhood home of George Washington, riding in the limo of the vice president’s daughter, and even moving into the former Luxembourg embassy.
All is well until she learns that her true friends from Georgia are coming for a visit. Now Savannah must create the life she’s been talking about in her letters—and fast! Will Savannah find herself or lose her friends?