The correct answer is "is she".
The full sentence should be: "She isn't from Muscat, is she?"
This is an example of a tag question. When the main part of the sentence is negative ("isn't"), the tag question is positive ("is she").
اذا كان لديك إجابة افضل او هناك خطأ في الإجابة علي سؤال She isn't from Muscat, (is she she is isn't she) اترك تعليق فورآ.