Her left arm doesn't just have the weird feather thing but also seems to have no resemblence to a human hand at all anymore.

As for the missing leg, yeah I did notice that, thanks to some video a few years ago. It gets even more interesting when you consider a tiny tidbit on the [url=https://bloodborne.wiki.fextralife.com/Old+Hunter+Trousers]Old Hunter Trousers[/url]: [i]A widespread belief of the period was that "beast blood crept up the right leg," and this led to the double-wrapped belt.[/i]