I introduced her through queen cell cap, I put the queen cell on the sealed brood frame in a five frame nuc box colony that was queenless for 24 hours. When she emerged she was quite small, I didn't checked the hive again till the day I noticed that the bees outside the nuc box is very excited and buzzing angrily, at first I thought it was robbing, but when I opened the box they were balling the small queen, she was not mated as she didn't lay any eggs.