Bewitched by Laura Thalassa

At age twenty, Selene Bowers desperately hopes to be accepted into Henbane Coven, an academy for young witches. Since one of the requirements for entry is to connect with her powers via a quest through the wilderness, Selene books a trip to South America. When a nefarious supernatural force tries to drag her plane from the sky, Selene’s magic awakens to save her life―at a cost. Using her powers devours her memories, one by one.

Worse, when Selene braves the jungle and discovers the source of the attack, she finds herself awakening an ancient evil, Memnon the Cursed, who mistakes Selene for his long-dead wife. The wife who betrayed him. Selene manages to escape and begin her studies at Henbane, but when Memnon turns up at the coven and witches are found dead across campus, Selene becomes entangled in a dangerous plot. Accused of the murders on the basis of her memory loss, Selene must rely on Memnon’s help for answers―and his plans for her will change everything.