The sister killed herself after finding the severance pay letter in Ryu's pants pocket. She confirms over the phone he has been without a job and I think she puts 2 and 2 together as to why the little girl is there.
As for the painting Ryu did of the little girl in the water, he didn't see her drown actually, but he saw her in the water. Enough to know that it was his fault she died.
The little girl tells the sister she misses not having a mother to braid her hair. The sister writes her phone number down and tells the little girl to call her anytime, that she is there alone and bored always. I think the police found this on the girl and showed it to Park. They could have easily traced the address to that number. Then again, Park is asked if he has wronged anyone. He says no, says he has led an honest life. Then he remembers he just fired a bunch of people and he visits with the police that one man's house, who had cut himself in front of Park and family. Again, putting 2 and 2 together.
reply
share