What does Mrs. Vann say her involvement with Dr. Mainwaring and Jamey are?

While Dr. Mainwaring is being interrogated by Alex and Milo, Mrs. Vann enters the room. She insists that Dr. Mainwaring is telling the truth and that he did not poison Jamey. She informs Alex and Milo that she was mysteriously given five thousand dollars to disappear from the hospital ward the night of Jamey's disappearance. She explains that she and Dr. Mainwaring are planning to get married and are desperate for money.