Is there any difference between ask about someone and ask after someone? For example:
Kate's skipped the past two classes. The teacher asked about her.
Kate's skipped the past two classes. The teacher asked after her.
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I am not sure there is any difference in meaning in standard English. But in at least some regions of the US, "ask about her" does not imply any particular attitude or topic; it is completely general. "Ask after her" shows concern for her wellbeing or health. It tends, at least in some parts of the US, to imply an attitude of caring and a focus on "being OK."
Someone familiar with meanings outside the US may need to supplement this answer.