The Empress's Tomb (2007) is a young adult novel by Kirsten Miller, the second in the Kiki Strike series.
It reveals that the runaway princess was not really a traitor and that her loyal servant had hidden the truth inside her coffin.
As the story begins, Ananka is having breakfast with her mother when she reads a newspaper headline: "Is This the Work of Kiki Strike?"
Later, Ananka comes face-to-face with a 6-foot-tall (1.8 m) squirrel painted on a side of a building holding up a sign that reads, "YOUR MONEY WILL SET ALL THE ANIMALS FREE."
Soon, Betty falls in love, Ananka might be sent to boarding school, Kiki is obviously stressed out and Oona's father seems to want her back to settle his "hungry ghost" problem with her dead mother.