The Shimmer Trilogy Series by Kimberly Spencer

When sixteen-year-old Jensen Meadows finds herself caught in the middle of an ancient faerie war, she soon learns that faeries aren't made of sparkly goodness. They're vicious. And worse, they're after her. With the help of Liam Casey, she delves into their world to find her missing sister and begins to suspect that her whole life has been nothing more than a faerie tale. But what if the truth is worse? Shimmerspell is a fast paced novella, 22,000 words, 88 pages in paperback.

Jensen hoped she’d never need Shimmerspell again. But now someone is stalking her, someone claiming to be the Lady of the Lake. To make matters worse, witches and dragons have come out to play. Now Jensen must figure out how to harness her power and accept her destiny before she ends up losing everyone she loves.