It's possible. Her health is failing fast. I honestly don't see her standing at a podium debating Trump for an hour while exposing herself to all the fraud, criminal acts, treason, etc etc for 3 debates. Even the corrupt DOJ would have to indict her then and at that point she would no longer be eligible. This may have been plan B baked into the cake from the beginning. While I can't stand the fully corrupt left; I do respect their cunning when it comes to politics. They usually manage to barely stay on the right side of the law; barely.
I have had a theory that the plan this entire time was to run her as far as they can, and then bring in Michelle O. She’s the only person in the country that can beat Trump.