I managed to make Sara tiny and Cathy normal sized, but when I thought about it. Cathy was the one who was meant to be punished so I made a wish for Cathy and Sara to swap places.
There was a pop noise again and suddenly I found I was on top of Sara who looked at me smiling and started giggling.
"I can feel your hands on my sides" she said as I realised I was holding Sara in the place I was holding Cathy before.
I sat up completely forgetting about Cathy and as I sat up I found myself sitting up over Sara's pussy so I managed to force Cathy into my pussy.
I found myself in a state of serenity for a second before openning my eyes to see Sara still lying down but with her head raised up grinning at me.