How can it be a "hypothetical" when it isn't even a "possible" (per the soon-to-be canonized JPII)? How can you reconcile two opposing characterizations of our Blessed Mother? Answer: It can't be done. Pope Francis' words clearly constitute a diminuation of Our Blessed Mother's virtues in a way that is inconsistent with the teachings of a number of prior popes.
Yes it is entirely possible for the Blessed Mother to reassess her prior assumption of what Christ's kingship means. See a half-dozen posts above.