She discovered with great delight that one does not love one's children just because they are one's children but because of the friendship formed while raising them.
Passion is something you really don't miss, after it has cooled. It is like looking at an empty bottle on the side of the road and thinking, "Boy, I wish I had a Coke. " The loves you miss are the ones that go away when they are still warm, even hot, to the touch.