very attentive brother, no matter what it is, his sister will be very happy, but for little girls of this age, gifts will become picky. The meaning is the meaning, but they will still care about the quality of the gift. For little girls in junior high school, it is recommended to give some cute, fun and creative gifts.
As a brother, you can give her a big teddy bear. Every child's dream is guarded by a little bear. Little girls must like such a gift. They will feel at ease when they sleep with it every night. You can also give her a carousel music box. For the time when they were young, they still have childish longings. Such a gift will also let them relive the little dream of a princess.
As a brother, love and care are the most important, and your sister must understand it. I hope it helps you.