1. Nope,
Daisy was my grandmother's middle name, but she spelled it Daisie.
2. I'd just use
Daisy.
3. see above
4.
Daisy is better
5. I like all of those. I just don't like
Elsa or
Mei. If you don't like those, how about
Daisy Elizabeth or
Daisy Marie or
Daisy Emma? I think
Daisy Evangeline or
Daisy Charlotte is best though.