Lilah's Adventures Series by Sherwood Smith

Just right for fans of Tamora Pierce and Patricia C. Wrede! When twelve-year-old Lady Lilah decides to disguise herself and sneak out of the palace one night, she has more of an adventure than she expected--for she learns very quickly that the country is on the edge of revolution. When she sneaks back in, she learns something even more surprising: her older brother Peitar is one of the forces behind it all... moreJust right for fans of Tamora Pierce and Patricia C. Wrede! When twelve-year-old Lady Lilah decides to disguise herself and sneak out of the palace one night, she has more of an adventure than she expected--for she learns very quickly that the country is on the edge of revolution. When she sneaks back in, she learns something even more surprising: her older brother Peitar is one of the forces behind it all. The revolution happens before all of his plans are in place, and brings unexpected chaos and violence. Lilah and her friends, leaving their old lives behind, are determined to help however they can. But what can four kids do? Become spies, of course! less

In this sequel to The Spy Princess, Lilah, newly made a princess, teams up with Atan, the hidden princess of the oldest country in the world, Sartor, to free the kingdom from a century of enchantment. Capture, escape, a forest beyond time, ancient beings, civilizations secreted in caves, and a deadly enemy await the girls. Atan knows that if she survives, the challenges facing a fifteen-year-old queen are only beginning.