To answer your last question, Della was not Huey, Dewey, and Louis' mother. In the 1938 cartoon that introduces Donald's nephews, the mother's name is Dumbella. Donald never handed over his nephews to Uncle Scrooge. The cartoon series, Duck Tales, is a bastardization of the comics created, written, and drawn by Carl Barks, the true creator of Uncle Scrooge. The modern Disney attempt (anything created by Disney after Walt's death) to make and distribute films is complete shit. Carl Barks is a genius who's work was completely taken over and warped by modern Disney ethics. Carl Barks wrote and illustrated adventure stories starring the ducks created by Walt Disney Studios, yet the personalities of his ducks were entirely his own creation.

I don't mean to sound like an asshole, but if you take the time to research and criticize Star Wars, do the same to other works of fiction. Carl Barks is one of the greatest men to ever work in the comic book industry, and should be recognized for his contribution to American pop culture.