I think it could involve the teacher adapting to new responsibilities and changes in her life. It might also explore her relationships with the kids at the kindergarten and her own child.
One way is through repetition. Read the same story multiple times to the children. For example, read a simple story about a little rabbit going to the park every day for a week. The familiarity will help them start to recognize words.
They are probably depicted as cute and innocent. For example, the little mice might be shown with big eyes and small ears, scurrying around in the snow looking for food scraps.