She confessed to all the lies she has been telling me.
Um. No, she hasn't.
She confessed to all she can bear to face right now. There is more to come that she cannot face you or herself about...
If you are going to dogmatically believe that she has told you everything, then you are setting yourself up to feel enraged and betrayed when something else comes out.
There are things she simply cannot tell you yet and she will continue to lie about them until she can.