While searching for the Boots, the Knight Commander must speak to the worshipers at the shrine, who will lead the Knight to the Grove of Trials outside the cave Kynareth's Grotto. If the trial is failed, they must be spoken to again to try again.
Alatar of Kynareth "It simply wouldn't be right to build over Kynareth's works simply so we could worship her. So our Altar is here, in the Chapel she has created."
Boots of the Crusader "The boots could only be granted to one who values Kynareth's works. It pleases me to see that you are that one."