By Katie Kerwin McCrimmon The mother laces her fingers through her daughters hands, holding her in her lap. She sings to calm her while a medical assistant straps a blood pressure cuff around the girls arm. Amy gets nervous going to the doctor. Countless strokes that she suffered in utero 18 years ago have left her blind and severely developmentally disabled. At just over 100 pounds, she is petite, but still much too big for her mothers lap. Even so, her mom, state Sen. Irene Aguilar, a primary care doctor herself and a Denver Democrat, knows well how to soothe…