Snip fail. Haha! Yeah, maybe. I saw somewhere that you've been around a lot of appaloosas, Faceman, so now I don't feel bad that nobody I've met around these parts has seen anything like her nose, since you haven't.
She does have other appy characteristics. White sclera, mottled skin, striped hooves, short, coarse mane and tail.
She's a red dun, too, so she's unusual, to say the least.
I've only had her for two years and don't know her background. The lady who my barn mgr. got her from for me had only had her for a few months. Never considered that it could be from an old injury. The skin looks good under it. I know she has the scar from an old halter injury ??? up higher on her nose.
Anyhow, here are a couple of other pix. In the one where she's sticking her nose in the camera you can see the mottled skin in her nostril.