As a Complementary Therapist one always has to be careful of using the word 'healing' in any context for fear of misleading a client and giving false hope. Therapists according to current rules and regulations are NOT healer's. I absolutely agree with this. It is a bold statement that if allowed to become a truth just might lead to a God complex in the wrong hands.
However that doesn't necessarily mean that a 'healing' doesn't take place when a client enters a therapeutic space with a therapist. I firmly believe that it is my clients that do the healing for themselves. The human body has the capacity to heal itself if we give it the time it needs and with assistance from both conventional and complementary medicine.
In the years I have been a therapist I have encountered people with the same disease on the same treatment, while one gets better, the other falls in to decline. It is clear under such circumstances that other factors are at play here.