Marcia isn't sure who it was, but knew for certain she didn't want them to see her in her current state. She shoved her clothes into her bag and pulls it with her away from the approaching presence.
The bag was cumbersome enough at her normal age, but now it felt like dragging a steel ball with her. There wasn't much to do about it at the moment, she didn't go through all the trouble of retrieving it just to leave it behind.
More important was finding a way to get back to normal quick. Or failing that a source of clothes, so she didn't have to run from every person in the mansion. She searched through her memory and found the best answer she could.