Overy, Alexandra. These feathered flames #2

"Sequel to These Feathered Flames"--cover

Awakening to find herself trapped in a strange tower, Izaveta knows she must find her way back to the ̤Turensi 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