She is clearly not dead. Just as Ratzinger is clearly not Pope. He has publicly stated he is not. What better evidence can one have?
My uncle will assure you that he’s no longer married, but facts, and the Catholic Church, say otherwise. He has publicly stated he is not, yet he still is. How could this be possible?
Oh but the Pope is infallible. Yes well his having validly and legally renounced the Throne of Peter, is not a teaching on faith and morals, so he could be as wrong about that as my uncle is about his own situation. To quote a great lady of our time “the Pope is not the arbiter of reality”. God is the arbiter of reality. The pope doesn’t make things true. They either are true or they aren’t true. He doesn’t have the supernatural ability to make a thing true by saying it.