These Feathered Flames Series by Alexandra Overy

When twin heirs are born in Tourin, their fates are decided at a young age. While Izaveta remained at court to learn the skills she’d need as the future queen, Asya was taken away to train with her aunt, the mysterious Firebird, who ensured magic remained balanced in the realm. But before Asya’s training is completed, the ancient power blooms inside her, which can mean only one thing: the queen is dead, and a new ruler must be crowned... moreWhen twin heirs are born in Tourin, their fates are decided at a young age. While Izaveta remained at court to learn the skills she’d need as the future queen, Asya was taken away to train with her aunt, the mysterious Firebird, who ensured magic remained balanced in the realm. But before Asya’s training is completed, the ancient power blooms inside her, which can mean only one thing: the queen is dead, and a new ruler must be crowned. As the princesses come to understand everything their roles entail, they’ll discover who they can trust, who they can love—and who killed their mother. less

Awakening to find herself trapped in a strange tower, Izaveta knows she must find her way back to the Tóurensi palace and claim the throne. But even with an unexpected ally’s help, she worries she might not be able to get news of her survival to her sister and escape this frozen land... moreAwakening to find herself trapped in a strange tower, Izaveta knows she must find her way back to the Tóurensi palace and claim the throne. But even with an unexpected ally’s help, she worries she might not be able to get news of her survival to her sister and escape this frozen land. Back at home, Asya enlists Nikov’s help to prove Izaveta is still alive, even as she finds herself forced to navigate the political world she always sought to avoid to save her queendom, her loved ones, and herself. But as the sisters work independently to reunite, a dangerous force lies in wait, trying to regain power in order to overthrow the monarchy…. less