She asked where I had been for my vacation.(变直接引语）

she asked "where have you been for your vocation?"
间接引语变直接引语时，如果间接引语的时态是过去完成时，直接引语要变为现在完成时，这种时态的变换要注意
语法和语义是对的，但是如果你用She asked,"Where did you go for your vacation?"的话就不是‘变直接引语’了

她问我假期去了哪里。

She asked "where had you been for your vacation?"

She asked,"Where have you been for your vacation?"

She asked "where have you been for your vacation?" 注意改为直接引用时的时态问题

She asked me ,"Where have you been for your vacation?"