I think a lot of breeds are more common now than they used to be, but I do wonder how many of those snowshoe breeders are just calling their cats "showshoe" because they look kinda sorta like a picture of a showshoe they saw. After all, it's not a CFA standard so there's a large portion of shows the cats couldn't even be shown in, making me think they're just making pets. Or calling a cat by a name to make it sound more exotic, when it simply has a neat pattern.
Anyway, I'm pretty sure that the cat in question isn't a snowshoe due to the coloration on the neck and around the ears. Compare to a breed example picture:
You can tell they're obviously a pointed cat, but with the white feet and the patch on the face.
The parts of the cat in the original post, that we can see, look more like a basic dilute calico pattern. The cat doesn't look pointed at all, just the normal bi-color pattern on the face. That doesn't mean she's not a pretty cat, of course -- I have a soft spot for the dilute colors, personally.