Those paranoid nobles... "She helped us to an imeasureable degree and put all her card openly on the table, instead of keeping them as aces up her sleeve... she must be planning something suspicious!"
Back when the bride stealing ditter happened, I assumed that Hildebrand vented his frustration by saying he wished someone would save Rozemyne, in the precense of the drugged sovereign knights, thus inadvertedly causing the incident, but nope, this was clearly entirely Raublut's doing, since the knights didn't get anywhere near Hildebrand and had more information than the prince.