Beware the frozen heart (Elsanna) (фемслэш)

Elsa and Anna are princesses and sisters, and have just lost their parents in a tragic accident. Elsa, who is 3 years older than Anna, is the future heir to the throne, but her uncontrolled magical powers keep her from fulfilling her royal and family obligations. Can Elsa control her frozen heart after all the time she spent alone, and give herself a chance to rediscover love in the midst of so much turmoil?