Fifth wheel backing

I have seen a lot of perspectives on this thread. It is surprising to me that more drivers are not receptive to advice from their spouses and insist on seeing it all themselves and getting out and looking. We use walkie-talkies. My wife knows she is steering the wheels of the trailer and I have taught her to keep her commands simple as in "back end to the left," "back end to the right," "straight back," and "stop" if I am about to hit something. I am the one who has to anticipate the delayed reaction of the fifth wheel trailer and the need to correct to follow it into the target area. It took some training to clue her into the need to avoid the editorial comments such as "You seem to be having a lot of trouble" and "I don't like this spot, it is hard to back into."