The Governor General most certainly makes all her decisions for the well-being and welfare of Canadians, and, on these constitutional matters, as close as she can get to it, to figure out what most Canadians desire in the circumstances.
She is not there to exercise her personal judgment or any kind of ideological view. She's got to look at the country and the situation it's in and try to come up with a decision that's in the best interests of Canadians. She seeks that kind of advice from her advisers.