Girl's Behavior

Is it weird to have a really good memory?

So I was recently thinking i had met this girl awhile back and when we first met she told me her dorm room number and said I should come up and watch h movies with her and her friends sometime. I respectfully declined and later I ran into her at a bar and she was drunk this was about a week and a half later and I walked her back to dorms. she texted me saying thank you but I went up stairs to her floor and knocked on her dorm to make sure she got back safely. She was confused as to how I remembered her dorm room number and I told her how. she was a bit creeped out. Is that normal or did I do something wrong?
Is it weird to have a really good memory?
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