An innocent child is never responsible for a rape.
If, for considered reasons, someone who has been raped decides that she cannot take care of a baby, then the right thing to do is to offer it for adoption. There are plenty of people who are looking for children to adopt, and they often have to travel to other countries to do it.
In this case, even better.
Better for the child too. An adopted child need never be told that her father was a rapist.