I just thought of what might have changed the dynamic here.
Perhaps this photographer was an old boyfriend whom she had allowed to photograph her while they were messing around or shoot some nudes of her. If, in this case she knows that she never used him prorfessionally, and therefore, never signed a release, then she could set the wheels of justice going.
1. That would mean that the release is a forgery.
2. The initial call to her would look a lot like extortion.
3. She could go to the police about it.
4. The police then could possibly get a search warrant
I'm not sure but this seems like the only scenario that makes sense to me.