Why does this girl keep staring at me but still ghosts me?

We used to talk like everyday, but now she won't give me more than a "I don't know" or "ok" when texting. I feel like I did something wrong - her friends stare and sometimes laugh when I walk by or also in class. I can't understand them because they speak Spanish aswell. I don't think I did anything wrong though, so are there any other reasons?

Why does this girl keep staring at me but still ghosts me?
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