That is a very interesting question. In fact, most of the instructions that pertain to limiting the Governor General's power were written by the executive. So it would seem that, when the Prime Minister requests that Parliament be prorogued, the Governor General has to grant his request, regardless of the circumstance, even in the event of a confidence vote in the House. Consequently, it seemed that the Governor General did what she was supposed to. We learned that the Governor General, as instructed by the Crown and the Prime Minister, understood that her role was to always grant the Prime Minister's prorogation request, regardless of the circumstances.
In my view, the House has to give the Governor General a new instruction through the Speaker of the House of Commons. It can be done. In other words, on top of the instructions to limit the power in question and the suggestions she was given, another is added—in the case of a confidence motion before the House, the Governor General must not grant a prorogation request from the Prime Minister, when he is clearly trying to use the measure to prevent the House from voting on that confidence motion. It would start there, and then other questions would need to be answered, broader ones, as to what the instructions to the Governor General would be. That would be a very good place to start.