She finally chose to forget that not everyone can wait persistently for another person throughout their life, and she had promised him when she made his first New Year's wish that she would take good care of herself no matter what. So in the end, she chose to break it off and start an unknown new beginning from a blank slate. She finally left and never looked back. From now on, she might really be happy on her own, because she had forgotten him, so she could be with the one who loved her without any distractions.
Dear, please forgive me for choosing to forget.