Now you reminded me of why I started to not like
Daisy as much some time ago :O It was one of my favorites and I had seen the movie/read the novel as well but never really thought much about her name. Then someone told me that it reminded them of a superficial person and mentioned the character and I guess that is when I started to sound it was too childlike or empty. I am also wondering about that and I think it might be that the name was chosen because it is very cutesy, without too much weight to it.