A Bolt of Magic by Charlene Hartnady

Find a powerful witch.
Escape the fae Court together.
Do it before the eclipse tomorrow.

It sounds straightforward, but my plan is riddled with more holes than a block of cheese. No self-respecting witch with any kind of clout will spare me a second glance. It doesn’t matter that we’re all captives here, shackled under the cruel rule of the fae. The harsh truth is that my situation is far more dire than theirs. Soon, I’ll be dragged back into the hellish mines, expected to labor relentlessly day and night. It’s a suffocating nightmare down there.
Tomorrow is my only window for escape, and I must seize it with everything I have.
It soon becomes painfully clear that I need to change my plan. I need a witch…but she will have to be as desperate as I am. A witch who has far less to lose than the others.
Then I find her. It’s like she was dropped into my lap, or, perhaps, the other way around. McColl, though not nearly as powerful as the others, shares my burning desperation to flee this place. We’re doing it! Hopefully, my insane plan will work. The stakes are terrifyingly high, and there’s a significant chance one or both of us won’t make it out alive, but we have to try.