One: You stated the effects were occurring.
Getting the various train and caravan leaders to listen to her was hard at first. So she settled for giving advice, and with her skill steadily getting proven and a few helpful nudges, they started to come around.
If by "with her skill steadily getting proven and a few helpful nudges" you did not mean the effects of her special skill, then I misunderstood the action.
Two/Three: My god would have almost unparalleled experience with mind-controll. Between Tsukuna, The Darist Plague, Friskillipop, and Gorgothonon, Moreau would be able to clearly see when mortals are being controlled in some way. He's served as a behind the scenes god of adventure for his entire life and would have undoubtedly run across mind-control from all of them, but especially, Tsukuna. If it was happening, and he was there also talking to the leaders of the caravan, it would not have been lost on him that something was affecting the very people he was talking to. It would be strange if he
didn't notice. Even with no prior knowledge, prior experience would have caused him to be suspicious. And as a god who greatly treasures mortal adventurers, he would have taken the same action.
But like I said, if the mortals of fray were not swayed by helpful nudges, and were swayed solely by your entity's administrative skill, then both I and my god have misunderstood the situation.