She is consuming more then enough calories to gain weight for her age. If she is not eating and drinking the amount you stated with the Pedisure and high fat / calorie foods, then that could be why she is not maintaining her weight. See her weight from the Specialist visit and then you can decide what you want to do.
They have not tested her to that extent. I have been doing research but have not come up with anything. They say "Calories" is the key, but I wonder. In a month my daughter has another weight check with the specialist so from there we'll have to see what they say and whether I will have to change. Is that to long to wait?
Heather
The diet they have her on is what I would have suggested. Did the MDs do tests on your daughter to see why she is losing weight? Your daughter needs an examine of her GI, cardiac, rule out certain disease states, and have all blood-work, etc done to find out the weight lose. If they did not, then maybe you may want to consider changing doctors.