This is Hugo-Award-winning author C.J. Cherryh's Del Rey debut--the story of Rusalka, the ghost of a murdered girl still seeking to exist by drawing the energy of life from all nearby living things, and the attempt to bring her back to life by her father Ulamets, and Pyetr, the young man who loved her.
My Love Lies Bleeding
Rebirth
Year's Best SF 2
A Flicker of Steel
The Dog King
Homeland
Robot Adept
The Daughters of Eden Trilogy