My GSD weight about 50 pounds, and she is 5 months. Ever time my mother comes by she exclaims how Cleo is skinny, underweight and how she can feel Cleo's ribs. She says I should feed her more, but I am feeding Cleo three times a day with a cup and a half each meal. I was even thinking of cutting back on how much I am feeding her. She seems healthy to me. Can anybody give me any advice on this matter?