Maeve was setting Mab up to look insane. This starts in PG. This is pitched to Lily for Cold Days. In PG Mab is down a Knight and Lea. Maeve is in doubt. The power balance if broken and Mab dare not make a move. Rashid can hold the Outer Gates and she can defend the Well Spring. At that point she is fully committed and has no resources to attack anywhere else.
The game in Small Favor was always about taking Ivy. Titania is the one bordering on insanity. Nic wants Ivy and Titania wants Harry. Marcone is the key. Since he is now a member of the Accords he can be attacked. Harry explicitly foreshadows this in White Knight.
"Freeholding lord," I said. "It means he's entitled to rights under the Accords—like rights of challenge when someone kills his employees. It means that if a supernatural power tries to move in on him, he'll have an opportunity to fight it and actually win."
Once Nic grabs Marcone and Mab declares Harry to be her Emissary, he is a target.
“This is another point of contention between you and Titania.”
“When one Court moves, the other perforce moves with it,” Mab said.
I croaked, “Titania wants Marcone dead?”
“Put simply,” she replied. “And her Emissary will continue to seek your death. Only by finding and saving the Baron’s life will you preserve your own.”
The put simply is a mild understatement. Harry was going to die and Marcone saved him. Once he became a Freeholding Lord he was screwed. Nic is just taking advantage of the situation to snatch the Archive. As a minor note, this I believe, is the only time we see Anduriel manifest.
For all you PG fans the definitive evidence that the BC struck at Arctis Tor. And that it was Thorned Namshiel.
And among the Fallen was one with much to answer for to me, personally, for its attack upon my home.”
“The Black Council attack on Arctis Tor,” I said. “One of them used Hellfire.”
Mab showed me her snow-white teeth. “The Watchman and I,” Grimalkin mewled for her, “had a common enemy this day. The enemy could not be allowed to gain the power represented by the child Archive.”
I frowned and thought of the silver hand that had batted the fallen angel and his master sorceries around as if he’d been a stuffed practice dummy. “Thorned Namshiel.”
Mab’s eyes flashed with sudden, cold fury and frost literally formed over every surface of the chapel, including upon my own eyelashes.