Carter puked every time we fed him. Every. Single. Time. It seemed like he would puke up everything we pumped into him with the NG tube, but he still gained weight, so something must have been staying down. Don't know how old Madeline is, but Carter had puking issues until recently (he's 5 years old). As long as she is gaining weight and the puking isn't causing any aversion to food, I wouldn't worry about it too much - except for the frequent laundry. She will probably grow out of it.