Although suggested weight charts list 132-173 as an acceptable weight for
a female your height, the lower end of this range is only for
a person with small bone structure; someone with average bone structure should weight somewhere in the middle (just where you are) and someone with big bone structure should be closer to the upper end. I would strongly suggest that you ask your Mom to bring you to your doctor or a nutritionist. That way, if Mom is right, you'll have advice from an expert.