Who is my daughter's husband?

I am a poor minister of Cauldkirk, a remote Scottish hamlet. Once an English tourist knocked on our door late in the evening - he lost his way. He fell ill, and stayed in bed for a month. My daughter, Felicia, and my sister Judith nursed him. He fell in love with Felicia and proposed to her. I enquired about his income, his character, and made them wait for 6 month to test them. Both waited, persisted, and married 6 months later. They went on a honeymoon to France and Switzerland. Felicia was very happy. They came back home, and she changed. I visited them, and she told me that her husband acted most strangely: for the first week he came out in the morning to do business in the City, he said; a week later morning business stopped and he started going out in the evening, to his club, he said. He has a closed private room, and buys my daughter expensive presents. Felicia saw him once talking to a loud and vulgar woman with yellow hair. I suspect that he is a gamester. What should we do?