I thought of this ending first and think it's quite funny but I didn't want it to be the actual ending. So here is my alternative ending.

"What?" asked Kai. "Tell me!"

"Having fun?" asked Charlie. Kai shook his head. "Come here I'll cheer you up but I've got to warn you Johnny's here too. But I remember you saying Johnny's quite cute that's why I thought you wouldn't mind.

"No I don't mind that. But what I do mind is that old woman talking to my plant outside."

"Oh, Ray's Grandma? Haven't you figured out how to get rid of her yet?"

"No. All Ray said was 'What Grandma' and winked."

"That's the clue," said Charlie. Kai looked at her O_o. "All you have to do is imagine her away," she said as Kai got into bed.

"Will you do it please you're stood up."

"Only you can do it, it's a story about you. Unless you give me permission to do it. Then I can." Kai smiled at her,

"You will use the power responsibly won't you?" he asked.

"Of course I will," Charlie winked.

"OK then. I give you the power to change the story." Charlie walked to the window and looked out to see Ray's Grandma still talking to the plant.

"Now to have some fun," she muttered. "Ray's Grandma does not exist," she said and Ray's Grandma disappeared.

"Are you gonna come to bed now?" asked Kai.

"Well you see all this running around and stuff has made me tired so I'm off."

"What? No stay for a bit longer, please."

"I have a good substitute though." Charlie disappeared with a pop. As Kai and Johnny looked across the room they saw that in the place Charlie had been was now Ray's Grandma.

"Time for some fun boys," she said with a grin as she took out her false teeth.

"AAAAAAAAAARRRRRRGGGGGGGHHHHHHHH!!!!!!!!!!!!"