I’ve known a couple of adult Daisys, and still don’t think it works at all. It is just so childish that it almost prescribes a certain type of personality on a grown woman; you’d have to be outgoing, charming and optimistic to pull it off. My test is whether or not I’d like to have a name myself or not, and as someone currently going through various interview processes worried about anything that will make it harder to be taken seriously professionally, I’d hate to be a [name]Daisy[/name].