He thinks that, were he the Chesapeake Ripper, he would remove her heart and keep it for himself. It seemed like she wasn't the type to just give it to anyone, so in her death, he would take it. He stands outside of her window and watches her, long coal-colored curls falling over her shoulders as she sorts through her files. Files about him, he is vain enough to assume.
She is calculating and intelligent, much like Annabel had been before he butchered her and his godforsaken in-laws. She had been flirtatious, with short skirts and smoky eyes and salacious words, and once they were married she took advantage of her power of him. She made him into a man who supported her fully, and a man who was made to feel guilty for doing so at the same time. Abel Gideon has let so many people make him into so many different men, and he's not totally sure what Abel Gideon would do if he were to entrude on Alana Bloom's quiet, though heavily guarded, evening.
He thinks maybe he would offer her a drink and compliment her on her bang-up evaluation of his mental state, and maybe he would leave her tongue intact because he'd quite like to taste it. But really, he wants to slice her throat and see if she looks just as shocked and appalled as Annabel did. He's really, truly curious.
But Will Graham appears behind him, and he knows he won't be able to wonder much longer.