There are a lot of conflicting aspects to consider here outside of a vacuum. Discounting the unknown unknowns, which could factor heavily here since it's an emotionally biasing topic, you've got the fact that the baby is going to be raised by an assumably attentive mother, as opposed to the 5 who wound up in that situation once, showing at least some increased risk of falling victim to such a situation again. Then you have the psychological damage to the mother, which is going to be even greater because she had to do the act herself. Then you've got the fact that a child raised by a mother who is willing to do it has a greater chance of being raised in such a way as to have a net positive impact on society. Then you have the greater potential for preventing the situation in the future, caused by the increased visibility of the higher death toll. I'm certain there are more aspects I'm failing to note. But, if we cut to what I believe is the heart of your point, then yes, she absolutely should. Let's scale the problem up for a moment. Say instead of 5 it's 500. Or 5 million. Or the entire rest of humanity aside from the mother and her baby. At what point does sacrificing her child become the right decision? Really, this boils down to the idea of shut up and multiply.

...and did you read my comments in the thread?