And then there were three

I blame ~DuplexFields and his fanfic here: [link] for this scribble here.

After I watched "Sisterhooves Social" and noticed Dinky competing in the sister-centered competition with this unicorn pony (fan name Sparkler), I wrote it off as being her babysitter or maybe a relative on Dink's father's side. But I liked that little fanfic.

And there you have you it.