That is a very strange sentence. We normally go to a place rather than go to a person though it is not impossible. "After a few days" does not mean anything. It begs the question of "a few days after what?" The sentence gives the impression that you want to say something but there there are things you do not want to reveal. What is the purpose of sentence?My mother wants to go to my sister for a few days after a few days.
Is it correct to say "wants to go to my sister"?
Despite the very annoying repetition, the sentence is at least grammatically correct with my changes above. A lot of learners struggle with the idea of "in a few days" meaning "a few days after today" but that's how we use it.My mother wants to go to my sister's [house/place] for a few daysafterin a few days.
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