Otoharo!
I hardly know what to say to you. In the first place, in my view, she should not have made the original statement. No one can. No one knows what a person will do with this energy. To embark on this profect, it was her responsibility to know her own energy well enough to predict being able to follow through.
As for you, simply look for someone else. Reiki is worth it if you are getting benefit from it. A hunk of my income goes toward this therapy and healing. Best investment I ever made.
finaltiy