Script of Frozen and usage of the word for

Elsa : Well, he was sprightly.
Anna : Especially for a man in heels.
Elsa : Are you okay?
Anna : I’ve never been better.

I didn't see the movie, but I am studying English with the movie and I saw some awkward interpretation so I need your help. I know that there are many meanings in the word for and I was wondering what the preposition means in the sentence in the context?

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9 used to show a reason or cause
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12 considering what can be expected from somebody/something
He's not bad for a beginner.
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http://www.oxfordlearnersdictionaries.com/definition/english/for_1

I think that considering the context, the # 12 is close to the right meaning of for or do you have other opinions? What do you native English speakers think? Thank you so much in advance.