Sister needs to control her sister, but she should master the degree. My elder sister is older than my elder sister and has rich life experience and social experience. You can give her some guidance and help to help her adapt to life better. However, elder sister tube elder sister also should pay attention to the following points:

1. Respect your sister's personality and ideas, and don't try to force her to act according to her own wishes. A sister should respect her sister's independence and give her enough space and freedom to make her own decisions.

2. Don't interfere too much in your sister's personal life, such as making friends, studying and hobbies. An elder sister should give her younger sister enough space and time to explore and grow by herself.

3. Pay attention to my sister's emotional needs and give her emotional support and understanding. Sister can listen to her voice, help her solve her troubles and puzzles, and let her feel her care and support.

4. Encourage my sister to face difficulties and challenges bravely, and cultivate her self-confidence and independence. Sister can give some positive suggestions and encouragement to her sister to help her overcome difficulties and achieve her goals.

In short, my sister needs to take care of her sister, but on the basis of care and support, she should respect her personality and ideas, give her enough space and freedom, and let her grow up happily with care and support.