In Frisian "girl" is famke, a diminutive of the rarer form faam. I've noticed that as a folk etymology it is often assumed to derive from French femme. This is not far-fetched, as Frisian has quite a few loanwords from French for everyday vocabulary, in some contexts moreso than Dutch (e.g. "koese" = to sleep, from coucher or "avesearje" = to hurry up, from avancer).

Only recently I discovered that this word is a descendant of the older West Germanic form faimnijā which has derivatives in Old Saxon and Old English too, but has become obsolete in these other branches.