I love the name. It was first choice for DD, (who at the last minute was named to honour a family member after a sudden loss). I would definitely use it for a future DD2 should she come along. I used to worry about the McCann connection, but others didn't and at the end of the day, that little girl did nothing wrong. I agree with thurlow, people wouldn't look twice at a little Fred or Rose now!
Go for it OP, I just picture a lovely little French girl (think petite filous advert!)