Grace and Fury by Tracy Banchart

This is on my shopping list for my high school library.  It is similar to The Selection and to Valiant.

Two sisters who love each other very much and are trained to have certain roles must switch roles when the prince decides on the sister who was to be a servant.  Then the other sister must learn to be a fighter when she is sent to an island prison.  Each sister must find her strength and confidence.  I'm looking forward to the second book.  There is some political challenges for the power.  It's a good book, Enjoy!