In 2008, Leilana was recruited by Shadowhunters as a potential candidate for Ascension after their numbers were depleted during the Dark War. She was trained under the mundane stream at the recently-reopened Academy and was among the first batch of new students in decades.
Leilana and nine other mundanes—including Simon, George, Marisol, Gen, Thomas, Sunil, and Boris—were set to Ascend in 2010. On the day before their Ascension, however, Leilana chose not to go through with the ritual and slipped away in the night. Both Sunil and Boris also left the same evening.
Leilana is said to be tall and pale.
- Angels Twice Descending (first and only mention)