Both PMR and NPMR are Virtual Realities. That is, they exist as what you perceive as provided to you in a data stream representing that specific experience. Each VR has a rule set. In the PMR rule set, you have a body, the usual senses and experience things limited and controlled, in the normal stream of things, based upon that rule set. That does not mean that we know all of the rule set for PMR. That is what science in general is trying to figure out with much head scratching and a fair amount of trial and error. Whatever healing occurs here in PMR occurs here in PMR and the Psi Uncertainty Principle comes into play. That is, the data stream is modified to represent that healing effect. As a simplest statement, I would say that healing is according to the rule set of PMR with the addition of effects instigated by guidance and allowed by the Consciousness System via the PUP. If it is best for you and not bad for PMR and the system, it is allowed to happen whether it fits via the rule set or not. The healing does not occur in NPMR and affect you here. You have no body there in NPMR and thus nothing to heal to start with. Secondly, they are separate data streams and experiences. It does not necessarily have to be instigated there as you can heal yourself, granted the knowledge and Intent, and meeting the criteria already mentioned.
The 'you' is the Individuated Unit Of Consciousness that receives the data stream that is this VR experience. That is not all that it does nor does 'all' of it represent the present 'you' of PMR. The you that experiences PMR is a sub set that we have come to call the Free Will Awareness Unit here or FWAU. A sub set of your whole IUOC specifically designated, and perhaps limited in some way, to be the experiencer of PMR as you. Another sub set or FWAU, not limited as possibly for PMR experiences the VR of NPMR. The totality of your IUOC also simultaneously, that is as part of the time sharing of state changes (digital time change) in Consciousness Space. You are a sort of digital sub routine in the Cosmic Computer that is AUM that experiences these various things in a repeating cycle of being called with different data as needed. Called as part of AUM with data and effects that you will be unaware of, called much less frequently with the NPMR data stream and typically are not aware of here within PMR. Finally called still less frequently with the PMR data stream to experience this VR of PMR. Not really that difficult to understand if you have experience with programming.
Hopefully this answers your questions. It seemed more efficient to say this than answer individual questions as stated. If you can't fit this into answers for your questions, ask again and we will try again.