This of course presumes the father wasn't in the picture, which given all we know is that she was alone with the baby for a few days we can't say if he was just away for a week or something. Or perhaps the father is deployed in the military.
Lot of discussion in this thread asserting a certain narrative when we just don't know. We know that, tragically, a mother died and that by some mercy the infant was rescued. That's really all we know.