Before that gambling game, Luo An had always harbored doubts about Mrs. Hanover's stance.
According to the information previously investigated by Mona, Mrs. Hanover had almost no contact with gambling. She preferred the parties, banquets, and art exhibitions of Europe's high society, so her going to Monaco this time was highly questionable.
When Caroline and Luo An entered the room and sat down at the card table, Luo An noticed Mrs. Hanover's gaze shift slightly. It was clear she had noticed them, but she did not make it known.
Later, when they started playing cards seriously, Luo An realized that Mrs. Hanover didn't care about winning or losing. After a few simple probes, he found she was specifically there to lose money to Brenekoff.
From this, Luo An made a bold conjecture that Mrs. Hanover had possibly used her own methods to get information about Javari held by Brenekoff.