Hope I don’t get squashed for this, but if your daughter is 8 and only weighs 68 lbs, my guess is that she is on too much Cortef. Add 100lbs to that, lol and you got me ...well almost....   :o) I take 15mg, I know everybody says everyone is different...that may be true. So do you have the results of her last couple of labs?

 I’ve read of saltwasters at that age taking that amount, if that much. So since your daughter does have the ability to produce cortisol she does not need FULL replacement.