Turns out a loved one had died and she was suffering from "broken heart syndrome".
Just yesterday I discovered a book called Can You Die of a Broken Heart?, and looking inside I saw the answer is apparently 'yes' 😧
Ever read Why Zebras Don't Get Ulcers? It's been in my reading list for ages, but I've never read it. It too seems pertinent to what you're writing here.
Ironically I am planning a post about ulcers, especially the role of H. pylori. Coincidence? Probably alien illuminati. Anyways, there are still many things we do not know about us and the world we live in which is why science is important. Cheers!