Acorna the Unicorn Girl

Acorna: The Unicorn Girl (1997) is a fantasy or science fiction novel by Anne McCaffrey and Margaret Ball. It was the first published in the Acorna Universe series that comprises ten books as of 2011. McCaffrey and Ball wrote the sequel Acorna's Quest after which McCaffrey and Elizabeth Ann Scarborough extended the series almost annually from 1999 to 2007. Acorna is found in an unusual escape pod by three galactic miners, Gill, Rafik, and Calum. Raised by the three unlikely fathers, Acorna, a unicorn girl, matures almost to adulthood within three years. While she is growing up, the miners discover that their 'daughter' has magical powers such as the ability to clean air and water, heal the sick, and detect the slightest scent....