I feel bad about a situation. What did I do wrong?

There was this girl i used to like, She seemed to like me as well in the gym. One day she was sitting near the machine i wanted to use. I used the machine and I sat near the machine. There was about 3-5 feets distance between us. I glanced at her. She saw that through the mirror and she rushed away. I continued to use the machine and complete all my sets. While leaving the workout room she looked at me with anger and her eyes were red. I left anyway and continued to do the stretching in the next place of the gym. While doing the stretching she came and she totated her wrist with other hand as if she wanted ro punch me.

Now what did i did so bad that she would want to punch me? . I feel really bad after this and haven't been to the gym at the time she comes.
I feel bad about a situation. What did I do wrong?
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