from what i remember, a japanese girl lives with a french older man and his nephew. She works at their shop and costumers call her a doll. Anime begins with a C

Do you remember anything else about it, like the story or what the characters looked like?

I think it's Croisée: In a Foreign Labyrinth

minus the french thing I'd say Chobits

OH OH OH and she only speaks Japanese,
and she accidentally broke the nephew's thing from his Dad,
so she gave him her kimono!
Or something.
I tried it before I tried Glass Maiden;
it's good, I guess, just not my kind of thing (usually). :)

Rozen Maiden?...description not quite right...because the girl is a doll and the boy is well, a boy who buys her off the internet...but the dolls are gothic lolita style dressed...

Speaking of Victorian doll-like lolita girls,
I forget the name of it but there is also a manga
where the girl may as well as well be Sherlock Holmes
and her assistant may as well be Watson, except
she lives in the library of the academy school he attends.

April Fool: - Gosick? I only saw part of the anime, but it sounds like what you described.

Yep yep!! ^^
I knew it started with a "G"!

Those names can be hard to remember. Especially if it's a really long Japanese name, I mix them up sometimes

Same here.
It would probably help if I actually
spoke and/or wrote in and/or read and/or understood
Japanese. XD

Pretty much. I know a few words, but not enough to sort out some of those crazy names, or worse, animes that all contain the same damn words. Like anything with "Mahou" or magic. So many Magical shows!