The sister is clearly a nun and the cistern described is a baptismal font. I believe the sister is asking Margaret when she will baptize the baby, i.e. when the baby will be born. It also could be that she has gone to a nun as a confidant and the nun wishes Margaret to be baptized herself.
The sister is clearly a nun and the cistern described is a baptismal font. I believe the sister is asking Margaret when she will baptize the baby, i.e. when the baby will be born. It also could be that she has gone to a nun as a confidant and the nun wishes Margaret to be baptized herself.