Childhood - death or murder

Just have got this feeling for some time now, did Manoj's sister die of smoke / suffocation or was it murder. A place near Ranchi, around 1980 or 81, i was in class 2 i think, the news came in that Manoj's elder or eldest sister (Dont quite remember) has died of asphyxiation due to smoke. It was winter, it got mighty cold in the winters. people used to have a chullah (it is a coal and wood clay stove) in the room, once the initial smoke has been fanned out the coal burns nicely and makes the room warmer. I think she was in class 12 or something, it was also a phase when young girls used to fall in love quickly and elope with very less thought with a very questionable characters, and this is the backdrop when we got to know that she had died. i dont know why this is still in my head, but there is just too many things that I cannot piece together, however tight you close them windows and the doors or those ventilators there is always some cracks, and these were old houses with large windows and ventilators, also the rooms were not that big that you cannot reach in 3 or 4 steps may be 5 at the most, and then there was this girl, not a frail old thing but a strong girl. How did she die, i just cant shake it off