The character reflects on her life and the choices she made, especially the most significant one: giving up her daughter. She acknowledges that while she has made many mistakes, this decision stands out as a responsible act that came from a place of selflessness. It was done with the intention of providing a better future for her child.
Despite recognizing this act as the best thing she has ever done, it brings her immense pain and regret. The conflicting emotions highlight the complexity of her experience, where doing what is right for someone else can also lead to deep personal sorrow.