In one of her last scenes (or most recent, I guess) she was getting pounded in the ass it it looked like the skin in her asscrack had split open and she had some kind of odd shaped gaping hole near the top of it. Through the vid you can tell they're trying to shoot around it, but it's plain as day through a lot of it. It's really... disgusting and very distracting.
I think she either retired or took a break to get some work done with that. When I first saw it and realized what it was, I almost threw up. A big, gaping ass wound is gross. A second asshole is very gross. No thanks.
Sorry, it's been a while since I saw the vid, and even then it was on a tube site that I can't post here. I'm sure if you look hard you can see it in other vids, though.