When I first suggested the quart of Polyquat I hadn't realized you had already added 16oz of it.

So I would suggest adding one ounce, and having your "pool angel" add a gallon of bleach every other day (or add 2 quarts everyday). This should be perfect. If chlorine goes a bit too high? So what? You have a concrete pool and it can stand extremely high chlorine levels (unlike vinyl). All that will do is ensure it is sanitary. It will come down on its own.