If there's anything I can offer is hope.
I've seen American Indian Tea, which is a medicinal mushroom, reverse a stomach tumor in my Mom's dog.
I can't speak to leukemia, but pray that perhaps >
THIS< may be helpful.
For more information, go to Dr Axe's YouTube homepage and search key terms like "cancer, Mom, leukemia, etc".
I also have some other links in the forum about the topic with sound information. Do an advanced search here under my name.
May the Lord turn this into a misdiagnosis.
Blessings