 The two separate amicably when Teddy walks in on Mark sleeping with resident Reed Adamson (Nora Zehetner).Towards the end of season six, Teddy has to fight for her job as Chief of Cardiothoracic Surgery.Cristina asks Owen to put in a good word for Teddy; he does the opposite by telling Chief of Surgery Derek Shepherd (Patrick Dempsey) that she would land on her feet.