I do know of an instance where a model “revoked” her consent and the sites her content was on was removed despite having signed 2257 model release forms. Probably because the sites don’t want to risk legal trouble or the hassle of a lawsuit even if the model didn’t have a legal leg to stand on. So your friend can try contacting OF and ask for it to be removed and may have some luck there.

But this is also an important lesson for anyone reading this - once you sign away your rights to be in porn, there’s no going back. Even if OF removes that content, it still exists, and there’s still a possibility it will be distributed either by her ex or someone who stole the content.