Whether Emma would have survived or not is probably impossible to establish, and is just the kind of red herring JW's throw in if you discuss a case like this.
More pertinent is, who are the two lovely children going to blame for having no mum when they grow up and the WT is no more, or at least the murderous non-scriptural blood doctrine is no more ?
I hope they are able to forgive their close family, who were indoctinated by a cult, but they should always hold the WT accountable.