FF Faerie Queen by Jennie Taylor

Ever since Cecilia came into 17 year old Renee's life they have been inseparable. This all changes when Cecilia tells Renee that she must leave immediately – and asks Renee to join her. Renee's world is turned upside down when she finds herself in a faerie kingdom as part of Cecilia's plan to avoid having to choose a husband. Things go wrong, however, and Renee's true feelings for Cecilia, a faerie princess in this unknown realm, cannot remain hidden for long as they battle upheavals and betrayals in this incredible and magical land.