The reason Rin had not brought anyone else into the spiritual realm while Aditya was being scolded was simple. She did not want others to see the Dragon Monarch sitting on the floor while receiving a lecture from his mother.
Aditya had his dignity as an Emperor to maintain, and although his future wives had already witnessed the scene, Rin did not want his subordinates or other members of the family to see him in such a position and make him lose face.
There was another reason Rin had deliberately waited. After Elena finished scolding Aditya, she wanted to give their family some private time together. Alen and Elena had been separated from their son for far too long, and Rin felt that they deserved some time with Aditya and his future wives before everyone else arrived.
Only after the introductions were finished and Elena had properly welcomed the girls into the family did Rin begin bringing the others into the spiritual realm.
