Her necromancer blessed this unity (after book3)
Kiriona Gaia was in a prison guarded by the Blood of Eden. Skeleton hands cuffed her wrists and ankles while a spine chained these together. She hated the fact that she lost against Alecto but due to the direct connection to Nonagesimus' necromancy Kiriona somehow calmed down.
Just to begin with the only will that made her attack was her father's will, a necromancer's direct order to her body, his construct.
It moved before Kiriona understood what was happening and it didn't stop when she wanted to. It was terrifying.
The Crown Prince remembered the shadow of relief as quickly growing skeleton hands restrained her.
When the metal door of her cell opened Kiriona expected Alecto to end her misery quickly but Harrowhark came alone to visit her.
The necromancer didn't know what to do. During the fight, she hadn’t even dared to look at the corpse. She would have given anything for her late cavalier's resurrection but not like this.
"Where is your girlfriend, Nonagesimus? A cavalier should stand by their necromancer's side when she is talking with the enemy."
Harrow looked at her face then slowly the wounds on Kiriona's neck. The worst was covered by her cohort uniform but Harrow's eyes knowingly wandered there.
"You are not my enemy."
To that the cuffs and the chain turned into bone dust. The Corpse Prince looked puzzled as she massaged her wrists.
"I am, ain't I? I belong to the Emperor, I am nothing but his construct."
There was a sudden change in her, Kiriona said this like a soldier at attention, with a completely blank facial expression. Then her head made a little twitchy move, similar to what a skeleton does under too-hard commands.
Then there was pain and panic in the eyes of Kiriona. She shook her head like she was saying “I can’t bear this anymore” and to Harrow's biggest horror she got down to one knee before her.
At this moment Harrow hated John Gaius more than ever.
"Reverend Daughter…"
"Please don't."
"If my sword ever was good use to you, my lady. Please release my soul. Send over the river or in hell, as you feel fit, I don't care."
A few minutes passed in silence, Kiriona didn’t look up at the necromancer, who had tears in her eyes.
"I…I can't. "
Blazing anger in those golden eyes, finally, good, the only thing I deserve from her, thought Harrow.
"Of course you don't. What do you want to do with me then? Put me into your girl's old coffin?!"
“I’m so sorry, Griddle.”
Her hand was on her cold face. Her black eyes are trapped by her gold. The thanergy felt electric on Kiriona's undead flesh. She had never felt so warm in her revenant life. Harrow touched the wounds on her neck.
Kiriona hugged Harrow’s waist.
"He did a rough work on you which is cruel given the fact that he was only able to work with your flesh. "Said Harrowhark as she played the other's red hair." He had never really touched your soul, wasn't able to because of me."
They are still connected and Harrow admitted it, the Corpse Prince had to take a perfectly unnecessary breath on that.
"Gideon, I failed you again. All I can do is become the one who pulls your strings instead of the necrolord."
With that Harrow cut her palm.
The thanergy buzzed up and magnetized Kiriona's dead body.
Gideon, still on her knees, slowly took Harrow's hand.
She kissed off her incredibly warm blood. She closed her eyes and heard a gasp.
Both of them felt warm and at some point Kiriona believed they were gonna end like Camilla and Palamedes.
Instead of that her soul found peace in her own body because her true necromancer blessed this unity.