Arthur C. Clarke's Venus Prime 1

Her code name is Sparta. Her beauty veils a mysterious past and abilities far surpassing those of a normal human. For she is more than human: Sparta is the first product of advanced biotech engineering. But now she is little more than a cipher to herself—crucial memories of the past three years are locked away in the dark recesses of her brain.

When the crippled freighter Star Queen arrives at Venus Station with a lone survivor on board, Sparta must risk her life to investigate what really happened during its deadly voyage in space.