Steel & Salt

After surviving a hunt that cost her a leg, Nita Winchester refuses to fade into the background. With a new prosthetic and scars that run deeper than bone, she returns to the road beside John, Sam, and Dean - not as someone who needs protecting, but as someone who has learned how to fight differently.
As strange omens begin to follow their hunts - salt lines failing, iron bending, angels watching from the edges of mirrors - Nita's past resurfaces in dangerous ways. Her military history, her unknown mother, and her connection to forces older than demons begin to intertwine, drawing the Winchesters into a conflict that feels personal... and inevitable.
While monsters grow bolder and heaven's messengers less subtle, Nita must reconcile who she was with who she's becoming - warrior, wife, survivor.
Steel & Salt is a story about resilience, chosen family, and the kind of strength that doesn't come from standing untouched - but from standing anyway.

If you haven't read Ashes and Iron, read that first it is the first book in the series