death punishment or separation of these women and their babies.
If the death penalty is applied then you end all the chances for this women to come back on the right track.
I am sure when these house maids go back to their countries they will transfer the message:
"Never have sex out of wedlock"
and they will explain, and this type of punishment helps or ensure that less maids who are coming to these countries will dare to have sex out of wedlock.