Srimad Bhagavatam Canto 04, Chapter 28, Text 45

SB 4.28.45

ajanati priyatamam
 yadoparatam angana
susthirasanam asadya
 yatha-purvam upacarat
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The daughter of King Vidarbha continued as usual to serve her husband, who was seated in a steady posture, until she could ascertain that he had passed away from the body.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
It appears that the Queen did not even talk to her husband while serving. She would simply perform her prescribed duties without talk. Thus she did not stop rendering service until she could ascertain that her husband had passed from the body.
Srimad Bhagavatam Canto 04, Chapter 28, Text 44
Srimad Bhagavatam Canto 04, Chapter 28, Text 46