She hasn't shot another anal scene since the one with Keiran Lee. That guy is the only one besides her husband who busted her ass.
If you watch the video with Lee, in the moment where he fucks her ass, it's clear she's not enjoying it one bit, I'd even say her gestures denote annoyance. She didn't like it a bit. And that's why she hasn't done any other anal scene except with her husband, and just a few.
I guess in the future, depending on the money involved and the guy fucking her, maybe she tries again. Maybe with Sins. With Keiran she didn't like it. I would say the whole fucking with Keiran did not please her. It was just a job to gain fame. And it worked. Btw she likes fucking with Jack much better. Something that is starting to be suspicious...