Hannah looked around the factory. She realized the employees were all focused on their work while Madeline was talking to the person in charge of the factory.
After they finished talking, Madeline would inspect the factory.
Hannah did not want to let Madeline inspect the manufacturing process of the perfume. When she saw Madeline changing her clothes before going into the factory, she figured she must carry through whatever happens. As such, she ran over directly to make a fuss.
“Eveline!”