 She tells the men it doesn't matter who the father is since it will be her husband's child.In the end it is revealed that she wishes to divorce her husband since he is cheating on her and never truly loved her.She does confide that the child's father is actually Masato since she never had sex with Kei or Yukichi and the timing isn't right for it to be Ojiro's since they haven't slept together since before the shuffle started.