Where was this girl born? What is the ethnic and cultural background of her parents?
The surname Bikel as in
Theodore Bikel is probably a Jewish surname which was originally a diminutive of a Yiddish, Polish, or Russian word meaning "ox" or "bull", since
A Dictionary of Surnames gives that origin for "Bickel", and
Theodore Bikel was certainly Jewish. But that may have nothing to do with your friend's given name.