I believe she did have a nude photoshoot which was seemingly made for her private usage only,
and both the photographer and herself have posted a few non-nude pics from that collection on their instagram quite some time ago
I suppose you can go check out those photographers who she had collaborated with on modelmayhem.Some of them've got a showcase(album or somewhat) of their nude work but only the member can access the file.If you are a member of that site,maybe you COULD discover some more leads or the genuine nude pics from it.
Hope it helps :)