As a breast cancer survivor myself, I can testify that once the cancer has spread (metastified) in as many organs as your mother's has, the future is grim.
I hate to be the bearer of bad news, but everything she is taking is all good and well, but is not a cure. It may prolong her suffering, it may give her a better quality of life, but again is not a cure.
Has the doctor given her a time limit? How long she will live?
can anyone point out any possible problems with continuing these items and adding the Ambrotose, AO, Plus, and Phytomatrix
This is something that she will have to discuss with her doctor.
The members at this site are in no way able to tell you if these new meds will or will not work. We don't know her medical history, we don't know what stages of cancers she has had.
We are not doctors, I am the only RN that I know of on this site that can give solid info based on not only education, but experience. Many of these meds can cause other problems with liver, kidney, heart, etc.
Your best bet is to discuss this with her oncologist, not us.