Sorry - haven't read the whole thread, so apologies if this point has already been made.
These babies, who are probably not going to survive, will (I imagine) have to be born by c-section if they go anywhere near to term. Women who have had a previous c-section are less likely to have another baby afterwards, and if they do get pregnant, are more at risk of complications and stillbirth. I think those risks are worth considering for this mother, given her longing for a baby.
That said I completely understand why the mother would not wish to terminate the pregnancy. I admire her strength and her certainty that these babies deserve a chance, though in my heart I feel very sorry for her and her partner as I'm sure it will all end in a lot of sadness for both of them.
Wannabe - there is no evidence that normal birth is an unpleasant experience for babies.