My Death Drove My Husband Insane

I died, only to find myself turned into a ghost, helplessly watching the world continue to spin without me.
What's even more devastating is that my own sister—the one who killed me—is now lying in my bed. She's had plastic surgery to look exactly like me, mimicking my voice and even my habits perfectly, attempting to completely take over my life.
And my husband Rafael—New York's most dangerous mafia boss—who has been cold as ice to me for three years, is now showing this imposter unprecedented tenderness. He's taking her hand, kissing her forehead, even agreeing to accompany her home to visit our parents.
Damn it! Why has he never treated the real me this way?