It's definitely a Hebrew name, and not even an uncommon one. I know at least four women named
Smadar (feminine, meaning: "nascent fruit" if you were wondering). I can't think why it's not in there, as it's her own name and the meaning is not obscure at all.
I don't know of a good Israeli name book. There are lists, and astrological stuff that has nothing to do with etymology.
Through quick browsing this website looks decent, and actually deals with etymology:
http://www.moriya.org.il/Name/Name1.asp It's all in Hebrew though, and not all entries mention etymology. If
Smadar Shir wrote a book, I think it would be a good bet, as she's an Israeli writing for English-speakers. I can't find name etymology books for Hebrew speakers, for some reason.
ETA:
Smadar is even in the database of this site.
This message was edited 5/12/2008, 10:35 AM