Put her back in without concerns in day. After an overnight, to be safe would be to use a pushin cage for fastest reintroduction. Put the cage over her on her frame in the nuc. Then insert the whole nuc into the hive. Take the cage off 2 days later.
If it is a really nice day and you have the time. You can do a direct nuc insert, no cage. Open the hive, remove frames to make space where the nuc will go. Leave it open to air/sun for a half hour. Then go insert the nuc and close up. This works very well and is my usual method when working through the rest of the beeyard. .. so long as there are not robbing conditions.
The newspaper combine is also nearly fool proof.
Do not stick her in a mini cage with candy. That puts a queen in full lay into an uncomfortable situation. Likely have eggs laid in the cage until confinement arrests her ovaries. It will also take time for her to get going again.
Whatever method is used, ensure to go through the receiving hive thoroughly removing all cups and cells started. Also, with a swarm queen; there are usually other queens, yes multiple, left in the hive. Find and remove them.
Hope that helps!