Christoph,
With your help I contacted the Sister's Abbey by telephone. I decided that waiting for a response by email could take too long.
One very sweet Sister tried to help me and then she got another sweet Sister, Joanna, to come to the phone, one who knew a little more English.
My conclusion is that if a window of time opens when I can go (and that is sooo difficult) , and if you are on vacation at that time, I may chance it and still go there. It will be a very brief trip. The second Sister referred to Sister Edeltrud Koch as being old. But she is only 84 or 85. That sounds young to me! She also mentioned like you did about the deafness. I said no problem, we can write a question and she can say the answer. I will tape it.
I asked what could I bring her from America. She said nothing just the visit. Then I asked what could I bring Sister Koch and she said maybe sweets. She said the community is small - only 15 Sisters.
I called the German Embassy back in Washington to see what sweets they suggest. The lady there said maybe Reese's peanut butter cups (apparently some German's like peanut butter and others do not),a Snickers candy bar mixture, peppermint patties and for German ideas she said Milka Chocolato, Ritter Sport, or Ferrero Roche.
Joanna was adorable. She tried to tell me I might need a GPS to find the place. I told her not to worry I would come with one.
Now the other news is that I called Norton to give him the above update. Plus,..
Can't finish, more later.
Jean J