Could it be that by injecting herself she was bypassing most her immune system?
Injecting the virus actually increases immune responses since the antigen is being exposed directly to the immune system.
And by natural means this lady, assuming her body was in great health and balanced, could never have gotten the cancer?
Do you think cancer may be 100% preventable in a super healthy body where everything is functioning right?
Again there are viruses that can adversely effect the immune system even if strong. As I mentioned before how often do we see people wondering how they got cancer when they eat healthy, live a healthy lifestyle, etc? I have heard it quite a few times.