Open the queenless hive.
Place a sheet of newspaper over it and make a few very small tares in it with your hive tool.
place the queen right nuc on top (rearrange frames into the appropriate sized body)
Then stick the lid back on, so you have floor,queenless,paper,queen right,roof.
Come back in 2 days and they should be merrily dragging bits of paper out of the hive.