What if my sister is homesick?

My sister's situation is that she will feel lonely and afraid when she leaves her relatives. You should get in touch with her teacher, let the teacher mobilize her close classmates to care about her, and let her feel that there are others besides her family who can care about her. Students are like brothers and sisters, and teachers are like parents. Everyone is in a big family, helping each other and caring for each other. Only in this way can my sister get out of loneliness. At the same time, you should tell your sister and encourage her to study.