I guess she did not know that the couple was pro-abortion until after the baby was found to have the defect.
God did not give you the grace of producing babies to turn them out to strangers. People are not a baby incubator and babies are not products. There is no way she could know anything important or deep about these people but she told herself it was okay to give them her baby.
Well, she had her limit of ignorance and darkness. I will give her that.