I don't really know the person in the story, but I have met her once and she has some activity on her personal blog, so I can answer a couple of your questions just to flesh out the scenario a bit...
She seems to be a healthy woman ... tall and slender. She's of the baby wearing, cloth diapering, homeschooling, etc sort and I know they aren't opposed to visits to the local farms for fresh produce and whatnot.
I was wondering about why her babies are big myself (being prone to that in this family as well with kiddos at 8,15; 9,3; and 9,15). She mentioned on her blog that she stayed away from any/all sweets throughout this pregnanacy until the last week when they went out for cupcakes. This big boy was also born 3 days before his due date ... good thing he came early! ; )
I think she mentioned in this story that she experienced hemmorage with her 5th birth as well. I'll have to go backward on her blog and see if I can find that story as I only met her about a year ago.
I prefer to find out that such things are at least somewhat avoidable complications. : )