It turned out that those kids had been led here by the bloody clothes which Annie had dumped to mislead them.
They were familiar with this area and knew that this was the only other place that had people apart from the hotel.
They had searched the hotel and discovered that Steve and his girlfriend were gone, and thanks to the bloody clothes, they had come to this cabin.
They found Wade Davis, and panic-stricken and aggressive, believed that Wade was hiding Steve and his girlfriend.
Not only had Steve discovered the weed which they had secretly planted, they had also hurt him badly.
There was no way they could let Steve and Janet go.
So, they tied Wade up and interrogated him, doing to him what they did to Steve.
After Luke was finished with his questions, the kid asked in a daze, "Can you send me to the hospital now? I feel cold."
Luke sighed and shook his head. "There's no point. You won't make it to the hospital."