Or maybe she didn't like Iwafuji Tomo that much, if she could have a large sum of money, she wouldn't need to aim to become the mistress of the Iwafuji Family, she could still live the life she wanted.
These are all hard to say now, they are personal choices.
"Nanahara, you've worked hard."
Kodaka Hiromi was fairly satisfied with the outcome, it was a bit regrettable that she couldn't rescue the person, but her mission had been accomplished. Her important client was cleared of the murder suspicion, and she hadn't wasted a lot of money hiring Nanahara Takeshi to help. But she immediately tested the waters, saying, "About the treasure mentioned before..."
She suspected that Nanahara Takeshi might have guessed the location, or rather, she felt that with his abilities, if anyone could find the treasure quickly, it would be him. She couldn't be sure of his intentions—surely he wouldn't bring his girlfriend to dig up the stuff overnight?
