Can anyone tell me what was considered "proper form" for the wearing of black ribbons as a token of mourning in 1813? I'm aware that much more elaborate mourning etiquette developed later in the 19th century. Who was expected to wear mourning ribbons, and for how close a relative or connection? For how long would such ribbons be worn? (I can't work out how recently Mr Elliot's wife died.)

I am trying to assess Elizabeth's motives for wearing her black ribbons. It seems rather odd to be wearing mourning tokens for a woman she has never met, the wife of a man who has given great offence to the family and from whom they have long been estranged. I think there is more going on than simply normal "correct" behaviour, since we hear nothing of Anne wearing similar mourning tokens.