Factual error: When Janet enters the operating theatre, the surgeons put some x-rays on the light box. The x-rays are from a barium enema, which would have no relevance to Janet's injuries.
Factual error: Janet would have been in surgery for several hours, instead of just 40 minutes or so.
Chosen answer: Nobody knew, not even the writers, until at least halfway through the season when they were writing the end. They wanted to keep all options open.
Nick N.