To Kill a Nightmare by Natasha Madden

Amelia Shadowmire has always known her magic was different—darker, wilder, and dangerously hard to control.

When an incident at home pushes things too far, her father sends her across the world to live with an aunt she barely knows, in a remote German village steeped in ancient secrets and shadowed forests. There, Amelia must confront the part of herself she fears most—and the legacy that runs in her blood.
As Amelia struggles to master her gifts, something evil is stirring in the woods, watching, waiting, calling to her magic.
Can she learn to control the darkness within before it consumes her?