Answer: the one who is from her old neighborhood and shares her religious beliefs.
Explanation: The partner who, in my opinion, would better suit my sister is the one who is from her old neighborhood and shares her religious beliefs. I feel this way because although we tend to believe that love knows no boundaries, I think that marrying someone who shared her old neighborhood and shares her religious beliefs will be more like her. I think that that will make them make similar choices regarding their everyday life.