He decided to... give Katie the wand.
She immediately stood up and pointed it at him. "You have no idea how long I have been looking for something like this," she said. "You arrogant son of a bitch. You thought that you had me fooled, didn't you? I may look like a ditz, but I am not as stupid as you may think."
"What the hell are you talking about Katie? and please don't point that thing at me, you might accidentally do something that you don't want to." He paused. "Oh... wait. I get it. This is another one of your jokes, right?"
But Katie wasn't smiling this time.
"You really thought that you could lead a double life with that bimbo, behind my back?" she shot back at him.
John's heart sank. How did she find out about Lisa. He had been so careful. Did Lisa say something to her? Maybe she had been stupid enough to call through to his apartment, and that caller ID box picked up her information. She had done it once before, but John was able to catch it, and delete it. He told her to never call from home or an identifiable address again. Why would she?
"You can't figure it out, eh?" Katie said, snapping his thoughts back to the current situation. "I know how to recover deleted email, my dear. I had been suspicious for a while, but couldn't bring myself to believe it. I didn't want to mess with your files, but I had to know for sure. Damn it, John! What does she have that I don't? Does she make you feel special? Does she do something to you that I don't?"
John tried to creep closer to Katie as she yelled at him. If he could get close enough to the wand, he could disarm her. There was no telling what she might be able to do with it.
"Oh no you don't!" She said, quickly aiming the wand and shouting, "Freeze!"
John did just that. He couldn't move. In fact, he was feeling bitter coldness. It was hard to think... and breath... and...
"Whoops," Katie said, with surprise. She aimed the wand at him again. "Thaw back to normal, but be unable to move."
John then felt warmth return to his body. He was grateful for the quick save, but now very worried as it appeared using the wand was far easier than he thought.
"That's just like you, John. Instead of hearing me out and discussing things like a man, you try and attack me to gain the upper hand. Well... if you can't be much of a man, the perhaps I should turn you into something else."
John's heart sank a second time. He couldn't move to stop her. He couldn't even try and talk her out of it.
"Let's see," she said. Aiming the wand at John again she spoke. "I can't have you attacking me, so a little help is needed. John.. you now cannot ever attack me again." The end of the wand began to glow, and Katie's eyes followed suit. "You also cannot ever try to touch this wand anymore. If you touch it, you will feel the most intense pain that you have ever felt. Also... " she paused for a moment. "Also, if you try and hurt me or gain this wand through indirect methods, you will start to become in mind what you are in body. No getting help from that slut either, because when I am done with you, I have some business with her."
John just sat there, unable to argue, or hide. She certainly covered her bases well, he thought to himself. But, there is always a way. There is always something that even a careful planner will miss. He didn't have time to concern himself with those thoughts much longer as he saw Katie point the wand at his chest and begin to speak.
"I wanted you and I to have something special, but you screwed it up by screwing someone else. Now it's my turn. Let's see how you like someone screwing with your life. John, you are now a ......."