It has been over a month since future Alexand returned Katherine to the Kyuunansen, and disappeared seconds later, without saying goodbye. Katherine is missing her version of Alex, and sits with the machine she used to send recordings to her parents. This time the recording is for Alex.
Alexand is wired up to many observation machines, and so remains in her bed. She takes the mirror, and reluctantly holds it up to her face. (Congratulations to the LGBT community in India for the Supreme Court ruling to decriminalise same sex relationships.)