Mina did not know how to process what had occurred in President Lee's office, but she was proud of herself for not being afraid. At first, she was a little shocked that the man moved into his father's old office, so when she first arrived, she went to the wrong place before someone who recognized her pointed her in the right direction. The man's face was so pale when he saw her that Mina felt bad for him, and she wished she had taken the time to add her scars along with her wig and contacts.
There was also the fact that President Lee believed that Lady was his child, which meant that at some point he had gone against her wishes, and while she had never monitored his actions, she was almost certain she would have noticed if he skipped using protection completely, which meant that he had tampered with it.