The Adjuster by F. Scott Fitzgerald

The nature of the curious influence that Doctor Moon exerted upon her, Luella could not guess. But as the days passed, she found herself doing many things that had been repugnant to her before. She stayed at home with Charles; and when he grew better, she went out with him sometimes to dinner, or the theatre, but only when he expressed a wish. She visited the kitchen every day, and kept an unwilling eye on the house, at first with a horror that it would go wrong again, then from habit. And she felt that it was all somehow mixed up with Doctor Moon -- it was something he kept telling her about life, or almost telling her, and yet concealing from her, as though he were afraid to have her know.

With the resumption of their normal life, she found that Charles was less nervous. His habit of rubbing his face had left him, and if the world seemed less gay and happy to her than it had before, she experienced a certain peace, sometimes, that she had never known.