Oh no! How sad! I know how you feel as my LO potty trained really suddenly about a month ago after we let her run about without a nappy when she had nappy rash; I had just finished a pair of longies that I never even got to wear on her
Would your friend consider wearing them at night? Or are they not using night nappies at all? Maybe you could keep them for a future child or someone who could grow into them. . . . . that's what I decided to do with mine.
They would def sell though, they are gorgeous.