Well.... after she made the decision to keep it, she, and everyone with a bit of common sense watching kind of knew the cesarean she needed to birth it may well kill her. Even in the best case scenario with herschel about or carol the odds were not great imo. Between infection, bleeding out, complications, a bad incision, a million things could have caused death for her, not to mention the baby can be brain-damaged, injured, or killed during the operation. This is an operation that can and does go wrong in hospitals sometimes...
So, seeing as she was committed to the pregnancy, she had 2 choices. Let the baby panic / be unable to be birthed and probably die inside her, which could also take her down anyway (and i think very few women would have the mental "fortitude" to let their baby die inside them to save themselves - but even then she still would have had to have the operation to remove the dead child, with most of the risks and complications that could lead to her death, but no baby to show for it.
Imo she was pretty screwed any way she looked at it - she had no way of knowing how long help would be arriving - if at all, and she would not have had the strength to walk, nor would the girl with her have been able to carry her to help most likely.