According to chapter 4, what was Sara´s life like?

As Sara's first schoolyears pass, she is happy enough. Miss Minchin praises everything she does because of her wealth, but Sara has enough sense and humility not to let it go to her head. However, as Ermengarde points out to Sara, not all of their fellow students are as kind—the older Lavinia, for instance, is a bully who insists on getting her way. Lavinia envies Sara because she gets her way—not because she is feared, but because she is beloved. Younger students are especially fond of Sara, who even hosts tea parties for them in her room: when Lavinia slaps a four-year-old named Lottie, the school's youngest pupil, Sara comforts her. For a time, the narrative cuts away from Sara and shows a conversation between Lavinia and her friend Jessie, and while Jessie is somewhat susceptible to the new student's charms, Lavinia maintains her skepticism and dislike.