Ravan Rajavi was the eldest of the Rajavi children, older than Kimiya and Tamara.
History
Ravan was an outstanding mage, one who aspired to be even better, to be considered among the great mages. Eventually, Ravan, having trained and pushed her magic too extensively, was subsequently absorbed by an element, making her a human elemental—a Devoured. While her parents, particularly her father, was initially so proud of her that they encouraged her younger sisters to be more like her, she became a touchy subject after the incident, such that neither of her parents would even mention her anymore.
During her younger sister, Tamara's, first year at the Magisterium, she was prompted to tell her friends Call and Aaron about Ravan.