@Valve i guess you can say for the sake of pride he wanted to prove his superiority before everything else. also given his pompus attitude i wouldnt hesitate to say this isnt the first time he's done this.
so its not just the spirits who cant forgive the royals, its the murdered spirits themselves. they cling to them.
@Silwith if she wanted the most peaceful outcome it was the best choice- until she learned the real curse.