Why she apologized for being drunk?

Yesterday i was drinking with my crush. I have known her for almost a year. Everybody was looking at her because she was the only one making herself fool out in everyones eyes.

She flirted and hugged tightly with every guyfriend she saw. She was loud. Today morning she texted and apologized to me and said she was sorry for embarassing herself and us yesrerday. Why? She has said she dont like me anymore than a friend. She didn't apologize to nobody else.
Why she apologized for being drunk?
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