Life had always been unfair, and that was what Cosette accepted long ago. It was the reason the villainess didn't want to be saved. She was blessed once; she was given the opportunity to correct her life and the people around her.
Cosette saved Conrad from the incident in Sharie where he would be caught in the crossfire between the fight of the rebels and the government. In their first life, Conrad would be injured, which would lead to multiple complications, and eventually die.
But Conrad was fine even right this second.
Conrad was living life the way he wanted to, and that alone was something Cosette was grateful for. She didn't have to organize a funeral in this lifetime.
She was also grateful that Maxen didn't have to go join hands with the notorious criminal organization. Maxen didn't turn out to become the monster she used to know, but a loving and understanding man with morals and conscience.