Breeding. It's something that happens, sometimes. Ah...hang on.

[ She'll just go for her pokeballs, before finding...yes, here. Milonite, shiny eevee extraordinaire. ]

This is probably the closest in terms of looks, for that, although I don't doubt Kanaya wouldn't mind showing you her pokemon. It doesn't seem to be a surefire thing for breeding, but it's happened on occasion - at least, I know people who have had it happen, and I've hatched at least one myself.