All my bikes have feminine names, but like women are also actors and comedians, Darla would be a D-series.
Tempest was named after a Pontiac 4-door I owned but never got on the road (bad cam lobe, spurted oil when I revved her, too much to spend), also a girls name (or a famous stripper, take your pick).
Germaine, my 1995 Cruiser SS - feminization of German (Arnold and Schwinn were Germans)
Theresa/Tess - my 1946 Shelby Traveler (think Tess Trueheart)
Rosa, my 60s red and white cantilevered Rollfast
Beryl (1951 Rollfast project) - green gemstone, also the name of Mrs. Patmore the head of the kitchen staff on Downton Abbey.
The 26" middleweight ladies Huffy project is named Holly...Holly Huffy.
Hey, Paul McCartney's old Land Rover was named Helen Wheels...