How does Ella say she was able to get the baby gnome to follow her? What does the grandmother gnome prophesize about Ella's future?

Upon returning the baby gnome to his family, the grandmother gnome expresses surprise that Ella was able to get the baby gnome to follow her. Ella explains that all she did was repeat a gnomic greeting she heard one of the King's parrots say. The grandmother gnome then tells Ella that she will one day save many people, and that she foresees that Ella will be closely associated with three other individuals who are not to be trusted.