How does a girl act when she's embarrassed or ashamed about things she did or said to a guy she liked 10 years ago?

Hi all, there is this woman who is 25ish who use to tease me and say annoying things to me 10 years ago. I think a lot of time has past since we spoke to each other. We occasionally saw each other every 3-4 years and didn't have each other as friends on social media. How would she act if she was embarrassed about things she said or did 10 years ago?
She seemed to be ignoring me, only talking to others including my brother and sister in law. I think whenever I spoke she was ignoring me. I did try to add her on fb a few months ago and she denied me.
The next day she was about to sit at a table, but she saw I was going to sit there and just moved to another table... I have the feeling she is embarrassed and ashamed about what she said to me 10 years ago, especially since I acted like I was upset about how she was with me.
Just wondering is this how a 25 year old would act when she is ashamed about her behavior towards me 10 years ago?
How does a girl act when she's embarrassed or ashamed about things she did or said to a guy she liked 10 years ago?
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