When the go-between Granny Wei brought her along, she was found with a white mourning band round her hair then.
Granny Wei卫婆婆更为贴近卫老婆子,she was found在此处强调一个观察者的视角。“白”在中国文化里,带有丧事的意思,所以翻译中意为“a white mourning band”。