Narad reveals to the queen the origin and mystery of pain. We see therefore that the possibility of pain is already inbuilt in matter as a means to help it grow and evolve through the struggle and the challenges.
This Canto is the moment of transition in the epic whence the story suddenly enters a dramatic unexpected turn. Savitri, the incarnate Divine Mother is destined to bear the burden of an adverse Fate.
Even as a human Savitri sets the highest standards for the race. Once she has chosen she does not reverse her choice just because of personal practical considerations. Prompted by her strong heart, calmly but firmly, she refuses to change her choice.