Green’s Dictionary of Slang

to be in a dilemma, to be uncertain, to wonder.

a.1655		Rev. T. Adams Works I, 505: He quandaries whether to go forward to God, or... to turn back to the world [F&H].
1681		Otway Soldier’s Fortune III i: Methinks I am quandried, like one going with a party to discover the enemy’s camp, but had lost his guide upon the mountains.