Nothing hurts like getting your hopes up only to be disappointed, even by obscurities like this.
HINADORI GIRL, by Mari Matsuzawa. First published in 2004 and first published in North America in 2005.
PLOT:
While his scientist father is away on the moon, Yoshiki decides to tinker with his dad's greatest invention: Support Robot Sally 001. She has a special program that allows her to learn about the world in the same way a child might. This makes it hard to teach her basic things like cooking and cleaning, but makes her very endearing to everyone save for Yoshiki's jealous and quick-tempered sister Akira. Can they raise Sally right while fending off the vain scientist Tsukiko who wants to steal Sally for herself?
