Obscura by Alex H Singh

Since childhood, her destiny was marked…
Sana Avery, a home-schooled teenager with the gift of magic, has been plagued by night terrors for as long as she can remember. She has no idea what it’s like to be a normal kid, one who doesn’t have to worry about supernatural hellspawn breathing down her neck.
But demons aren’t her only problem.
There’s something she doesn’t trust about her nanny, Pamela. Maybe it’s the look in her eyes. Or maybe it’s the fact that she worships the god of darkness, and has singled Sana out as her human sacrifice.
Desperate to save herself, Sana teams up with Aleksa, a bad boy with a heart of gold, to move across the country to the sanctuary of his father’s cabin. No evil could reach her there—the property is sealed with protective magic against the forces of darkness.
Except…
Evil always finds a way.