The deceiver's heart / Nielsen, Jennifer A

"Now firmly on the side of the Coracks, sixteen-year-old Kestra Dallisor plans to use the magic Olden Blade to kill the evil Lord Endrick, but when she fails, Endrick turns her into one of his Ironheart soldiers, without any memory of her rebellion, and bound to obey him, his spy within the Coracks; the rebel Simon is desperate to return her to the Kestra he loves, but he is reluctant to use the magic that might heal (or destroy) her--and neither Simon or Kestra is sure who they can trust among the rebels, because the whole rebellion is endangered by its increasingly murky politics"--Provided by publisher.

In Antora, Kestra retrieves the Olden Blade and tries to cut down the evil Lord Endrick. When she fails, Endrick strips her memories and forces her to obey him. Simon is desperate to get Kestra back, but won't use his magic to save her. When Simon and Kestra finally reconnect amidst a war, the two will have to learn to trust each other again if they want to survive.