I know I have seen the those photos before,, The one's down the middle of her portfolio page.

Once was a  Bait and Switch website.

A couple of times on Eros

I'm thinking another place was Roomservice, I think she may have worked for Jill before.

You can contact her and see if she did work for her.

Like I said this is a big stretch.

I know I saw that one of those photos somewhere else,

It was RoomService, her name is Sarah.
Link to Sarah reviews: http://www.theeroticreview.com/reviews/show.asp?id=176251

Now I know that Jill's Ladies work on the side, so I would make sure that we are taking about the same
lady. and not someone borrowing her photos.

Hope this helps.