Lada was going to explain the entire reason, but she decided against it and instead gave a straight forward answer, "it's because not a lot of us have strong hypnotic powers. In that sense, it is better not to try to use it against nobles who might have a way or two to resist such mind attacks. This decision was taken based off several evidences pointing to the high possibility of a number of these family heads possessing artefacts that may grant such immunities.
Wearing a ruminative expression, Rindher spoke again, "how would they even possess such equipment, in unison no less? We have not been found out, have we?"