Hi Bill,
That part about the two regulators was what did not make sense to me, but that is the way it is. Apparently regulators are sensitive to input pressure too. You could splice a tee in between the regulator and the tank and extend your fridge line to that fairly easily. I don't think that the outside LP tank would be a problem with your daughter, just slide it under the camper and the hose could be tucked behind one of the arms, on the off side of the camper.

Aaron