The Savage Keeper by Isabella Starling

I may be free, but my mind is still consumed by Xavier.

Deep down, I know the only way I can pay for my sins… But it’ll take someone breaking me to do what I can’t bring myself to admit.
When I’m asked to keep another woman safe from the clutches of Xavier and his brother, I feel a duty to ensure her safety.
But not if it means risking my own…
After all, I already know Xavier will do anything he can to keep me tethered to him.
And my loyalties may not lie with my best friend, but with my sadistic guardian instead.