I didn't realize that too much peanut butter could be dangerous, but I also am confident that I am eating significantly less than 5,300 calories per week in peanut butter / peanuts. If you're churning through 2-3 standard jars of peanut butter a week, that's just absurd.
One standard jar is 1 pound so she is claiming 1-2 jars per week. That is not unreasonable and I find it highly unlikely it was what destroyed her health. I eat about 1 jar per week.
The math works out to 5.3k calories? Like, I'll pop a spoonful of peanut butter as a snack every now and then but holy fuck that's a lot of peanut butter.