First of all, Fisher aka Ywahoo has been present on the European markets for years, her books are still being sold and have seen German translations. So a group cooperating with her and working according to her alleged teachings should not be a complete surprise.
I see numerous entries for „Dr. Dieta Biebel“ in various platforms listing medical doctors (as doctors may not do advertisements according to German law, such platforms are in use to be able to do concealed advertisement). From these entries, Biebel is a psychologist.
However, Biebel is mentioned at sunray.org:
http://www.sunray.org/dotnetnuke/AboutUs/SunrayCommunities/GermanandSwisscommunities/tabid/191/Default.aspx They mention groups in four German cities: Munich, Frankfort, Warburg, and Ravensburg (each town in a different federal state).
Biebel gets another mention as an alleged elder at the sunray.org site:
http://www.sunray.org/dotnetnuke/EldersGathering/PeaceVillageElders/tabid/156/Default.aspx Dr. Dieta Biebel, Germany
Dr. Dieta Biebel is a Grandmother of Bavaria, known for sharing stories and traditions from her Bavarian elders and village. Obstetrician, Psychoanalyst for those 0-99 years, and Star Child Focalizer, she is world renowned for her research on schizophrenia. “I am a midwife for all healing birth processes, using the power of the trees and animals.”
Regarding the claim of Biebel being „world renowned for her research“, google results do not validate this. I also could not find any validation for Biebel ever having been an obstetrician or gynecologist. However, Biebel seems to have written a few articles in a German language journal – Dynamic Psychiatry - earlier, there are four articles listed:
No 43, issue 2 1977: Example of catching up a development of ego
No 46, issue 5 1977 : Deficite ego and pregnancy
No 78, issue 5/6 1978: Descripton of the therapy of a psychosis
No 60, issue 1 1980: Development of a psycho-somatic symptom as an expression of ego-structural changes in the psycho-therapeutic process of a psychotically depressive patient
A mere four articles is not quite what one would expect in the way of output from someone of real world renown, especially since there are no later publications as the one from 1980.
However, our friends at Esowatch have got an article on this journal and on Dynamic Psychiatry. They say:
http://www.esowatch.com/ge/index.php?title=Dynamische_Psychiatrie_nach_Ammon „Dynamic Psychiatry according to Ammon is a controversial method in psychotherapy basing on German psychiatrist Günther Ammon (1918-1995) which came into being from 1968 on and saw itself as a link between psycho-analysis and psychiatry. It is a method outside of established psycho-analysis and is not accepted by the scientific community.
Dynamic Psychiatry is taught and practiced in two institutions of German Academy for Psycho-Analysis (DAP) in Munich and Berlin. Founder Günther Ammon was DAP president from its foundation in 1969 until May 6, 1985, and from March 7, 1986 until his death in 1995[...]“
„Criticism:
Critics and former patients accused DAP and Günther Ammon of totalitarian, cult-like structures. Patients reported arbritaryness, dishonourable treatment, breach of medical confidentiality, break-downs, and defenceless dependency from the DAP community. The separation from family and therapies taking years, caused a mental dependancy of the patient from DAB.“
Beaverstream, this seems to be far more important for what you were/are going through than the connection to Diane Fisher and her 'teachings'.
From what you say, Biebel most probably was not accredited with the German public health service system in the first place, so she was not in a position to treat patients under the public health insurance system. Individual private health insurances, however, may cover treatment with DP so that patients insured on so-called private terms may be refunded by these insurances. This means that patients seeing her will have to cover all fees from their own pocket with no or limited possibility of refunding.