Catholic teaching and Reiki

There doesn't seem to be much out there written about Reiki and Catholic teachings and apparently the Catholic practitioners of Reiki haven't felt the need to investigate this. At least those I've communicated with. This actually seems rather strange to me and also not a very good practice.
I also was struck by what I think the Reiki practitioner doesn't know. She thinks it is an ancient 1000 yr old Japanese practice revived in the 1930's. From what I've read,(which is not a whole lot) it was sort of "invented" around 1900, perhaps drawing from some ancient ideas, thoughts, or practices. What I wonder is, the Jesuits in Japan (and beginning from Matteo Ricci in China) why didn't they spot and utilize this "ancient wisdom" in the last 500 years since they've been there?
It is good to be able to offer something healing and relaxing to patients; is Reiki it? Or, is Reiki sort of like experimentation on a captive and perhaps desperate audience that can hardly say no?
Since it is complimentary medicine it ought to fall under the medical chief of staff of the hospital somehow too, perhaps? For sure somebody ought to approve of the use of a complimentary medicine and one ought to make sure they have insurance coverage and liability too.
As far as theological questions, I feel that what needs to be clarified are claims of "intelligent energy" being directed and such. If Reiki were simply some unknown energy force that could be described as difficult to measure and simply another aspect of physical science that is one thing. However, from what I read Reiki sounds fairly close to some kind of channeling - at least from some who describe what they do. Others talk about it like it is similar to acupuncture which I do think is a physical phenomenon and I can accept Reiki of this sort with much less problem or possibly no problem.
I don't want to get too much into this myself, but if anyone has a good source which investigates this relationship between Reiki and Catholic teachings I'd be willing and interested to peruse it.
-J