First of all, I am very sorry to hear that your wife did not make it....
I am still considering the Cesium Chloride option - the problem is that we are talking about administering it to a dog, not a human. Many of the potential side effects are easy to notice when you have them yourself but when you are trying to see them in a dog it is a bit more difficult. The dosage for dogs is much lower and if I do this I will get the whole package from a vendor who does telephone support. I have spoken to them and the guy sounded very competent and knowledgable.