What the main-stream media did not report, is that she was a proponent and member of a pitbull loving association, trying to dispel stories that the breed is dangerous. Tragic irony there.
If these dogs were not fixed, it would explain everything.
There is something in mature pit bulls that are not fixed, that is hormonal and triggers in the brain. With lower hormone levels it’s far, far, far less likely to happen, it’s just that a lot of people don’t fix their pets once they are adult size. They all ought to especially when a breed is noted for such behavior.
I believe it turned out the first report was false. She fell off of a ladder and, I think, split her head open and lost a lot of blood. The husband found the dogs nudging their master, trying to wake her, and misunderstood what happened.