Nock, if I understood, you added nurse bees and a frame of brood with bees? Is this correct understanding?
I realize the books say ok to add nurse bees but my experience say otherwise. In the past, I shook bees into a large Tupperware box, slightly shaking the box to encourage the flyers to fly off leaving only flightless nurse bees to add to a weak hive. I added the nurse bees to the weak hive and to my surprise the queen was balled immediately. I released the queen from the balling bees and the queen took off, never to be seen again.
Hope your queen returns.
Van