A good title means several things. It tells the reader about the story they have in their hands. In a practical manner, it gives us something to hold on to and refer to. However, most importantly in my humble opinion, it provides inspiration the the writer. One doesn't have to keep the title of course, but it must reflect what occurs in the mind, ideally across the different levels you wish to convey.
While I've been gathering my notes and plotting for Memory's Children's second book, several titles -- working or otherwise -- are under consideration:
Dancing the Touchstone
The Touchstone Honor
The Touchstone Procession
What is a Touchstone?
a test or criterion for the qualities of things.
Make of that what you will.