yathā-pūrvam upācarat

ajanati-without any knowledge; priya-tamam-her dearmost husband; yada-when; uparatam-passed away; aṅgana-the woman; su-sthira-fixed up; asanam-on the seat; asadya-going up to; yatha-as; purvam-before; upacarat-went on serving him.