He's a king about to go to an all-out war, brought the daughter along to the center of battle, left her with just one single escort to lead the troops, didn't leave any way of communication, then when the said daughter was kidnapped by the enemy...
*PIKACHU FACE*
Smh. She would've been waay safer in the hands of the angels. He clearly knew she wouldn't be accepted since she's a mixed blood, she had no friend there, and he's about to go to a huge battle, yet still selfishly brought her along. That was a super irresponsible choice as a parent.