When he asked her about the vervain, she was definitely thrown. She hadn't realized he'd been near it before when she had turned her back to take care of his gun. But she didn't have time to say anything because in the next split second, the herb was in her face and burning her skin. "YOU BASTARD!" She shouted at him.
She darted across the room, almost missing her chance, but grabbed just enough of his shirt to yank him back away from the door again. "This running to the door shtick is really getting old, Tony," She said, shoving him in the direction of the kitchen. She slammed him against the counter, grabbing the already injured wrist, holding him down against the counter top. "Now, see, it's things like this that really make me regret picking you." she said, "And it's such a shame that you're making it come to all this...I really never intended to hurt you, Tony." She said, a pout in her voice.
Though this apartment had only been used a handful of times, Katherine was not stupid. The place was stocked with anything she might need in most situations. Usually, this meant simple things, food for her toys, alcohol for both of them, basic apartment things. But it also meant thing like rope, zipties, and other things that could be used to hold someone where she wanted them. It was really unfortunate that it had come to all this, but Tony wanted to keep acting like this? She would have to take matters into her own hands.
She grabbed the rope from one of the kitchen drawers before guiding him over to one of the kitchen chairs, shoving him down into one, pulling his arms behind the chair to tie him up. She made sure the knots were tight enough on his wrists that he couldn't slip out of them. "Now, since you want to be such a bad boy," She said, standing up again, rounding to stand in front of him, "I'm just going to have to make sure you don't have anything else..." She stripped him down to nothing but his boxers to check for any other weapons or communicative devices he may be hiding away.