Princess Luna was maintaining Canterlot in Princess Celestia's absence; the Sun Princess having remained inside the library since this whole mess started, rarely leaving, requiring food and such to be brought to her. She was disheveled, forgoing self-care in her persistence to track down Twilight. There were scant few others who could; she was following two-week old magical traces of a now-closed portal, through a microwave, to who-knows-where. It was... trying work, and Celestia's appearance showed it. Her mane was frazzled, she had bags under her eyes, and her mood had soured significantly.