I'm am of the opinion ,from personal experience, that profound healing in PMR can be acheived through Lucid Dreaming-OBEs. I do believe that the representations of ourselves and loved one's in NPMR are more malleable then our PMR versions.When focused on with healing intention the results can sort of reverberate or distill out to the PMR representation.
From my experience, I want to say that it is not even necessary to see the person at any point in NPMR.And also that it may take many repeated episodes to start to see a real effect ,depending on the severity of the problem.
Of course ,as they say around here,the psi uncertainty principle is at work and there are limits,so timing can be important.Also,it may be that there is some greater action at work in a bigger picture,but this is difficult to know for sure about IMO.
Here is an interesting link about this. I suggest reading some of Ed Kellogg's articles and papers too. I know for an absolute fact that this stuff is real...http://www.dreaminglucid.com/print/printarthealing.html