Nailisi thought it was interesting to hear her master wanting to rope Sikeqinyan mages in. There would have definitely been a lot of coaxing involved, the easy way or the hard way.
The king of Metatrin managed more than just the nobles; he managed the mages of the mainland as well. It was a concept that Saleen had decided for himself. He wanted to become the greatest king in all of the mainland, just like how it had been with the emperor of the First Dynasty.
There were few mages in Sikeqinya and they were of low levels, making them easy to buy over. Saleen intended to use the Sikeqinya Empire as his guinea pig, to prepare for the day when he would take Alchemy City for the sake of uniting the entire mainland.
There would definitely be people refusing to submit to him in Alchemy City. Master is no longer aimless. Nailisi grew to feel secure about her master and stopped feeling so homesick about the demon plane.