You know how to turn her on...
... Now that you have watched the series already... I don't have seen the animation, but I keep fond memories of the comic. It's really interesting to watch your personal interpretation of Chii's facial features... Maybe that perfectly straight nose is what gives her away as an artificial being rather than the metal earmuffs!
I also find her smile suspicious... It's lovely, but... Doesn't it means anything else...?
Ahh, enough chatter for geeks. This picture is charming, and that pose fits the character perfectly! Welcome back to the block, buddy!