^^^...Basically. Sounds like she has some insecurity issues, and needs to feel like she's important to someone( you). I wouldn't trip about it. Like you said, you're about to head to college. People eventually go there seperate ways. Maybe this is ya'lls time to part.
Your friend seems very insecure right now. It will get worse when you go to college, because you will have even more friends. I say you leave her alone. :arrow: