Hale Shannon Hale 
Princess Academy: The Forgotten Sisters [EPUB ebook] 

Miri thought her time at the palace was over until she gets some last-minute homework from the King she must travel to the farthest reaches of the Kingdom and set up her own Princess Academy. There she must prepare three distant royal relatives for marriage to a prince. But who are these forgotten sisters? Don’t miss the Princess Academy story as Miri embarks on a new quest!Fans of Shannon Hale, and the ever-popular Ever After High, won’t want to miss this gorgeously woven return to the bestselling, award-winning series.