My wife used and is using Essiac tea but 30 days is too short to show any significant reduction. Also, while I will say that Essiac is very beneficial and definitely does help, more is needed.
Check her bloodwork. It will tell a lot about what problems she may have. Do not just fight the cancer. The blood needs to be in optimum condition especially if she ends up needing traditional therapies. Even the slightest sign of anemia reduces the chance of survival. Platelets should also be well within the normal range as should all white blood cell counts.
The flax oil and cottage cheese has helped in many cases.
The number one cause of cancer remission is alkalizing with all fresh uncooked natural vegetable and fruits. Avoid sugars.