I think they just look solid so my mind saw "bigger." I have one of the Wimaumau rescue giants (44 pounds), but even my 2 previous gals were far from petite... about 26 to 28 pounds. My dream of a petite 18 pound basenji just never happened, lol.
What a sweet face! Thank you for taking her in, she needs a forever home.
As Pat indicated, unless you have info on the parents being clear, or at least one clear, she should be tested for Fanconi asap.
When I 1st got Kirabo, I had named her Hollie. A few mths later my wife told me every time I had a seizure, she would go crazy & wouldn't leave my side. Then 1 night I had a dream & God told me to name her Kirabo which means " a gift from God". She truly is God sent. Kirabo stays by my side & is constantly keeping her eyes on me, always observant of every-thing I do.
Her name is Mattie and she is a real sweetie. My son brought her home from a mission trip in Appalachia. She has become my shadow and we just can't imagine not having her around.