Did she really forget all about me when we were friends in school?

I'm a college senior. A girl in my class went to middle school with me (7th and 8th grade), which was in 2015 to 2017. Even though it's been over seven years since I last saw her (we went to different high schools), she hasn't changed a bit and I recognized her immediately on the first day of the semester. We talked a lot back then, had all the same classes, were in band together, sat next to each other in class. I thought to myself, "wait.. is that [her name] from middle school?" as soon as I saw her face. We've made eye contact like 3 times so far, and she hasn't said a single thing to me. No look of surpise on her face. It's like she doesn't recognize me at all. Has she really forgotten me? :'(

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The professor has even said my name out loud twice, and she still doesn't recognize me.
Did she really forget all about me when we were friends in school?
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