(Kara sees android that looks like Alice - realizes she is an android)

Luther (to Kara): You knew from the beginning. You just didn't want to see it. She wanted a mom, and you wanted someone to care for. You needed each other. What difference does it make? Do you love her any less now that you know she's one of us? Alice loves you Kara. She loves you more than anything in the world. She became the little girl you wanted! And you became the mother she needed. Forgetting who you are, to become what someone needs you to be... Maybe that's what it means to be alive.