Deirdre, your post about the vet coming to the house bought tears to my eyes, I'm happily incredulous to see your efforts paying off so soon.
Just some notes, fenben absorbs best when taken with fat, and I'd try occasionally making and offering the 2:1 immersion blended cottage cheese flaxseed oil budwig meal, (must be fresh), by oxygenating, it charges and nourishes the cells like none other that I've seen.
For your knowledge, fenben works in three ways: it stops reproduction, interferes with glucose metabolism of the cancer cell, and allows the cancer cell to die, actively altering that immortal type feature that allows cancer cells to thrive.
When I held that medicine in my hands the first time, I felt like I was holding something holy, guided by the hand of God, and I felt blessed and light filled and radiant.
Replying to your post inspired me to use baking soda dissolved in dmso on my own spots, there's a lot of info from EC over the years and sometimes it gets buried in my mind, thank you.