original: The arrival of the two mice raises her morale.
simplifications: The arrival of the two mice made her happy. When the two mice came she felt better. The mice arrival raised her morale. The mice lift her mood on arrival. The arrival of the two mice lifts her spirits. The arrival of the two mice made her morale go up. The two mice make her happier. Her moral is raised by two mice arriving. The arrival of the two mice increases her morals. The arrival of the two mice made her more confident.