Sure she did. There was an infinitely small probability that she would live forever.
My point, if I have one, is that looking forward, given enough time anything is possible. But being possible and actually happening are different things. Not everything possible actually happens. For example some things that are possible are bound to contradict each other. For every "X happens" you could propose "X doesn't happen".
I just covered this in my last post, but it's worth highlighting on its own in response to this so here goes
essentially, probability is conditional. when we're considering the set of all possible events ("every set"), yes, we will be considering sets of events that are simultaneously non-zero probability and contradictory. for example, your aunt being able to die before having kids, and your aunt having kids before dying. both are possible, and both are contradictory.
however, once one actually occurs, the other event necessarily becomes a zero-probability event. it is not possible to have kids before you die and to die before you have kids, so once one of them happens (in this case, dying before you have kids), the probability of having kids before dying becomes 0
basically, think of this hypothetical timeline as a giant decision tree, with infinitely many branches. as we move down the decision tree, we cross off all the branches that we don't choose. once an event definitely happens, all potentially contradictory events cannot occur. there are still, however, infinite events to occur in the future, because there is infinite time.
essentially, you have an infinite set called the "every set" of all possible events right now. within this every set is an infinite number of infinite subsets, each smaller than the every set, but still infinite