Tan Guiren was an innocent and naive person by nature. Naturally, she would believe whatever others said, and had a very dogged determination when it came to abiding by her own set of standards.
Due to her harsh experience in the United States, and because of Huo Shaoheng, she remembered that particular incident much more vividly than other things that had happened in her past.
However, it had been a long time since the incident had taken place, and therefore her memory of the event was naturally beginning to become fuzzy.
Because of that, Gu Nianzhi's reconstruction of the truth had firmly imprinted itself in Tan Guiren's mind and subconsciously made her perceive Gu Nianzhi's questions and answers as her own line of reasoning, therefore reinforcing it all in her mind.