Yes, this was inspired by 'Pigtails in Duet'.

Inspired by? I'm sorry, I wasn't aware plagiarism and
inspiration are the same thing.

I'm not sure this is plagiarism.  For one thing, the author gave
credit where credit was due.  For another, it wasn't a simple
substitution; significant changes were made.

The subject of plagiarism has always made me feel uncomfortable.  I
have written a story - "Storm's End" - that is basically a complete
rip-off of "Ordinary People".  Over the years I have gotten very
positive feedback on it, including some quite heart-wrenching
responses from people who have been in similar situations.  They speak
quite positively of my story, and that always makes me feel a bit
guilty - it really isn't my idea.  I've just adapted another story.

I've always tried to rationalize it because:  A)  I've fully
acknowledged in my Author's Notes that I've taken the plot from
"Ordinary People", and B)  Taking someone else's plot is really no
better or worse than taking someone else's characters and using them
in your own plot.  The rationalizations don't always work for me
because I've taken someone else's characters *and* someone else's
plot, leaving very little on my part that was creative or
praiseworthy.

But I think that A) and B) are still significant factors when it comes
to borrowing ideas.

In an ethically gray world where we're all stealing from other authors
to one degree or another, I think we should be careful with charges of
plagiarism.

-Richard