She went to the police station and made/gave a full 'confession'.
I have a 'confession' to make: I have never done this before.
The priest will hear 'confessions' after mass today.
(..) What's going on, Bezu? You know that I am Opus Dei? Yes. A bishop of my order called me. He said a killer came to him in confession. His name was Robert Langdon. He said I couldn't imagine the evil in this man's heart. That he would keep killing. He said I had to stop him. (..)2006 The Da Vinci Code
(..) So, what do you think about the fourth line of text... ...Fache wiped clean before you arrived? He brought you here to force a confession, Professor Langdon. He's still in there? What's he doing? Fache isn't even looking for other suspects, okay? He is sure you're guilty. (..)2006 The Da Vinci Code