Alexander died, his soul leaving the world before Esme could get to him his soul was protected and shielded with immense power and she couldn't touch him. Esme wanted to torture him but she couldn't do that, but seeing him suffer while he died made her happy.
"you will suffer either way Alexander," she says looking at his soul "I will come to torture you even in the afterlife" she was sure about that, the shield will vanish after a while she waited so long, and she wouldn't mind waiting a little more.
William pulls Aurous up to take him back to his place as it won't be a good idea to be here with humans, it would trigger them and he won't be safe, the eunuch agreed and he lets him take Aurous away and in thin air they just vanished and the queen comes to see the king and she couldn't be happier, she cries looking at him but the eunuch did not let him get any closer to him as the poison would mean the death to her.