Rubens was often with Anna because he was their counsellor, financial advisor and attorney, and thus was suspected of adultery with Anna between 7 and 10 March 1571. He was arrested outside the city of Siegen when he was on his way to see her. He was blackmailed for a suitable confession. Anna was put under pressure too: either they must confess themselves or Rubens would be executed. Anna agreed on 26 March 1571 to plead guilty. On 22 August 1571 Anna's last child, Christine, was born. On the basis of the allegation, William of Orange didn't recognize the child as his daughter. Christine received the name "van Dietz". On 14 December 1571 Anna had to sign their consent to the final separation from her husband. In addition, William of Orange was not willing to pay maintenance for her.