Hi Marianne,
Strange that a friendship was ended through your relationship with Reiki energy! Perhaps your friend was not in a space to accept your power, and the potential for power that must highlight in themself. I know I have discoved an unwillingness to accept personal power in my own circle of friends. There's a lot of, "oh, that's just the way it is, I can't change it" going on. It's great when they really get it that they can do stuff though! For example, after I did my Reiki I, my mum was very sceptical, and my brother then came to stay and did it too, with the result that now my mum is constantly requesting what she calls a 'double-whammy' from the two of us, and is also looking for a Master in her locality to teach her!
You mentioned healing with animals and plants. Yes, I find my connection is very strong with plants in particular. It feels to me like they have a bio-dome-like arc of energy over them! I've been giving reiki to my courgette plants since they were seeds, and one has come out bigger than a marrow!
I had the thought recently that it would be wonderful to set a specific date and time for Reiki practitioners all over the country, or else, starting a bit smaller, in a specific locality perhaps, to all send reiki to the planet and see if anything miraculous happens during the time. They've had great results doing this with mass-meditation in the States I hear! Hmm...
Blessings,
Gill