Anne McCaffrey 
Restoree 
Fantasy

There was a sudden stench of a dead sea creature. There was the sudden horror of a huge black shape closing over her. There was nothing…
Then there were pieces of memory, isolated fragments that were so horrible her mind refused to accept them. Intense heat and shivering cold; excruciating pain; dismembered pieces of the human body. Sawn bones and searing screams.
And when she awoke she found she was in a world that was not earth, and with a face and body that were not her own. She had become a Restoree…