Coming late to this, sorry.
I
wouldn't put 5 frames of foundation in with Q and her frame.
Better a frame of stores (no foragers bringing anything in) and another frame with some (open?) stores and some space. And a dummy board outside the stores frame ...
And reduce the entrance to a single bee-way (pin the disc to hold it exactly) to reduce the risk of them being robbed out. Its only a tiny colony.
You could try a frame of foundation in the old hive, but without a laying Q, they won't be particularly motivated to do anything about it. But bees are bees, so, worth a try.
ADDED just leave one large well-filled open QC. Brush bees off that frame and shake off all the other frames to check thoroughly that you haven't missed ANY other QC.
And check back in exactly a week's time - 8 days if you feel lucky - and regardless of the weather, to knock down the new ones that they will have built - again repeating the brushing/shaking full visibility check.
Miss one either time and you risk losing bees in a swarm.
If your chosen cell is open at the start, it shouldn't have emerged after another 7 days (8 days is pushing it if your open cell was near to being sealed). But 7 days after Q is removed is too late for them to start a third flush of QCs (no remaining young enough larvae) - so, if you spotted them all, you will be safe.