Isn't type 2 diabetes among skinny people with "good" diets rare?
She lived on a farm, ate only vegetables except the occasional roast on Sunday, walked everywhere, very little sugar, ate locally grown food, no McDonalds or fast food at all in this isolated rural area in the 1940s even 1950s and 1960s, a healthy lifestyle didn't help.
One of my aunts (mother's side) died of pancreatic cancer. So it seems there is some genetic problem for pancreases (sp?) and women on my mom's side.