A thought just occured to me though I may be completely wrong and please correct me if that is the case..
While the baby is growing in her mothers tummy dont they share the same blood ?
And if so what could possibly be wrong with a mother giving the blood that they both shared before her childs birth could be wrong for the mother to give her child the same blood after her childs birth ?
Its just a thought that came to me .
Regardless of the above the wife is far better off without the husband and the religion (hopefully) and she has her daughter for life whom she saved despite her father by his actions sentencing the child to death.