For the "Counterfeit Agatha" born from the mirror, her life was split into two distinctly separate parts—
One part was warm, bright, fulfilling, filled with all her love and hate for this world and the emotional bonds she formed, which were essentially just a series of fabricated lies fed into her mind;
The other part consisted of merely three days, filled with pressure, fatigue, pain, and an eventual death-like liberation; yet, those were the only memories that truly belonged to her.
And now, as the deceased returned to the living world, the counterfeit had the chance to continue her journey. The problem that lay before her was this—the former was desirable but unattainable, and after a long time, all regrets would eventually turn into resentment, while the latter was real but frail, a pale and brief life insufficient to sustain her as a "complete person."