First, it takes longer to get used to it. Most college students are 18 years old when they go to college. Many students leave their parents for the first time, so they can't adapt to college life at first. When he gradually integrates into the group, they will turn their attention to college life and not miss their parents too much. But for this 15-year-old girl, she may need more time to adapt to this strange environment. After all, he is a minor now, and it will make him feel bad to suddenly leave his parents to live in a collective life. At first, he may be afraid of the surrounding environment, because most people around him are more than three years older than him.
Second, other students will take the initiative to help her. In other respects, the girl's college life will not be affected, but she will become everyone's pet in the school. After going to college, everyone lives alone without their parents, so they habitually help others and get help from others. In our university class, only one student is younger than all of us. He was only two years younger than us at that time, but the boys and other girls in the class were very willing to help him, because everyone thought it was not easy to go to college at such a young age, so they would not have conflicts with him, and they would be more tolerant of him when conflicts occurred.
This little girl is easy-going, I believe he can adapt to college life quickly, and other people on campus will be friendly to him, so we don't need to worry about his college life. I believe this little girl can find a good job after graduating from college or continue to improve her education and make progress with her classmates.