Rosy is from an old Italian story named "Paperino e la mezzanotte di fuoco"(I TL 616-C), written by Guido Martina and drawn (rather poorly) by Luciano Capitanio.
Scrooge dreams about his time in the Old West in a place
called "Golden City." He decides to return for a visit, and drags Donald
along with him. Scrooge wears his old mining clothes to help him reminisce about the
When Scrooge asks if she's been waiting here for him all these years, she hesitates, then says she's been out of the country. He asks if she remembers their engagement, and she replies that her memory isn't as good as it used to be. She observes his ragged old clothes and says he looks just as poor as he ever was. Since he said he'd only marry her when he was rich, he lets her think he's still destitute. Rosy tells him she only waited three days before marrying someone else.
A man named Joe arrives, who also once vowed to marry Rosy. He and Scrooge find out that Rosy is actually very wealthy. She offers a bunch of diamonds to the winner of a duel between Scrooge and Joe. Donald has to go searching for rifles, and returns with empty guns. Joe puts bullets in his weapon, however, and shoots Scrooge's hat.
Scrooge flees, and Joe gets the diamonds, even though he's
I believe her full name is Rosy Curenbois (literately meaning "Rosy heart-in-wood").
(It seems Scrooge has a thing for dance hall
girls! First Goldie, then Tilly, and now Rosy! ;-)