With the King and Queen dispatched only one direct, clear member of the royal family remained. 

This deep into the castle and considering the length of the trial of blood that was noticeably being left behind as it dripped off his body being beyond what would normally be expected from the Royal Executioner, Grindan had made the tactical decision to abandon the concept of trying to pretend that he was still loyal to the now empty crown of Hyrule. While he had yet to encounter anyone as he made a quick pace towards the chambers of the Princess, he was fully prepared to cut them down as he went. 

Tied to his belt to serve as both a grim trinket to demoralize any solders encountered as well as save himself the trip of having to return to the Royal bedchamber to claim the trophy was the severed head of the former Queen of Hyrule, her face frozen in an expression of pure horror as her mouth hung open in an endless scream that would never be heard. Surprising to some, despite the jagged nature of the cut that disconnected her head from her body, the face was remarkably untouched; No brushing, cuts, blood stains or damage to speak of, allowing for easy recognition even as the severed head swung from his belt by her beautiful, long hair.   

It was as the pair of them neared the Princess' chambers that the signs of struggle and corpses started to appear. Servants mostly but with the odd solder, normally found in pairs. Those Grindan had sent in advance had taken his words to heart... or what counted as such in the undead skeleton warriors. Arriving at the Princess' door, it was wide open and the room within clearly displayed signs of battle... but there was no blood or fleshy corpse to be found. All three of the 'knights' lay broke on the floor, their bones largely kept together solely by the armor they wore. 

The armor itself intact for the most part, but looking them over it was easy to see where singular, powerful strikes had landed that bypassed the armor and resulted in the doom of the undead warriors within. The professional handy work of the Sheikah, likely Impa herself if he was any judge. After all, Princess Zelda was long gone without a trace. 

A frustrating situation but... not completely unexpected. Of all the Sheikah Grindan had met over the years, Impa was among the most forward thinking of her peers; It would not have surprised him in the slightest that once the attack of the town had started or possibly even at the first report of an army moving in the field that Impa had disappeared the young princess out of the castle and away from the future battle to safety. An overreaction fueled by paranoia some might say but... well, the King and Queen were dead and the Princess safely out of [i]his[/i] reach. If she escaped castle town and Ganondorf's forces remained to be seen, but there was likely little he could do about it now. 

With a sigh he turned, not addressing the companion as they started the trek back towards the war room. He had a head that he needed to collect... and then a defending garrison force that needed to be informed that the war was already over and there was little point in them continuing to fight.