I'm looking to find an old book I remember reading as a child but never finishing, all I can remember is that the cover art was vibrantly read and the story was about a robot (possibly android), I believe the title of the book was just the name of the robot as well. To this day I thought it was called "Esther" but I've been looking around online and can't find it at all.
Thanks!
by PinchedSlinky