She glanced at the face of her wristwatch showing a picture of Howl and Sophie embracing each other on the balcony of their moving castle. It illuminated the hands of the clock showing ten-forty-three.
She slowly walks to her designated laboratory. She passed by the laboratory Luke and his team using. At this time, Luke is probably sleeping soundly in her guest room.
She likes the eerie silence of the laboratory under its bright lightbulb. This was one of her preferences that Luke thought weird. According to him, most girls would feel scared to be alone at the laboratory at night. She has never considered herself to be like most girls. She prefers to work at night.
Because, if she does her part of the research late at night. It is less likely to meet other people in the lab where she would have to pretend to interact with them. It's not that she dislikes people on a personal level. She simply isn't good with casual civility.