To everyone who has been sending their well wishes to my sister, expecially
prying_pandora,
angel_of_olore,
cazrolime, and
chrryblssmninja, about what happened, thank you so much. As can be expected she's still having a hard time, and probably won't be anywhere in the vicinity of "alright" for a while, every little bit helps.
So far I haven't found out anything more about what may have happened, other than a few days prior he had gone to the doctor complaining of stomach pains, where the physicians were 95% sure he had
Chrohn's disease. I don't know if that had anything to do with what happened, but it seems an awfully big coincidence that one of the contributing factors to our mother's death was
Ileitis, which is a type of Crohn's.
Like I said, no one is sure yet, but its still a big coincidence.