I wasn't trying to take over her medical care, just throwing out some ideas I have heard discussed about how (and why) arterial plaque is formed that I found thought-provoking.
Considering how many people die from blockages vs. how much we know about what causes them and how to prevent them, I had assumed our understanding of them would be more thorough. The low fat diet is currently popular among doctors, but the conventional wisdom on that might change at some point.