Roy wondered what would happen if the second target for the device weren't even a person. Would it work? Would it do anything? Would it do something weird and unpredictable? Deep down, Roy was a curious experimenter (just like his alternate doppelganger from the other reality). He looked around for an inanimate object for the second target.
They were in the kitchen so there were a lot of choices. He saw kitchen utensils and the box of cereal and wondered how it'd be if he swapped her with one of those. He also looked around the apartment and saw a few more options like the couch or Jack's pile of clothes in the hamper. Finally, he wondered if he could try something outside like the building or his car.
He realized he was thinking about this too deeply and decided to try the next thing that came to mind. He finally decided that he would try to swap her with...