A clone created to be the ultimate sexual companion.  Designed specifically for every master.  In this case, her future master was on the older side, and was also possessive. There were features to her body that were specifically selected to suit his need.  Some hormone secretion that would increase his libido, some things to make him never jealous....  However, during her creation, she became malfunctioned, which would normally lead to death.  But as luck would have it...