"I'm going to make you little like one of my dolls!" Amelia announced theatrically.
"Ok, lets see if you can shrink me" Anna smiled. She figured with a bit of imagination she could play along with this, like walking on her knees, putting on a high pitched voice and pretending everything around her was much bigger than it actually was.
Amelia waved her wand at Anna and shouted "Abra Cadabara!"
There was a flash of light around the tall, dark blonde haired woman which momentarily took both her and Amelia by surprise. When it dissipated she started to feel strange. Her perspective was shifting, the room was getting bigger, Amelia was getting bigger, her clothes were starting to feel baggier and before long her jeans had fallen down causing the little girl to laugh at her. To Anna's disbelief, she was really shrinking.
"Cool, it worked!" Amelia applauded herself as Anna continued to get smaller.
"Amelia" Anna asked politely in a cute, squeakier than usual voice while trying not to panic "Can you quickly see if there are any instructions in the magic box?"
Amelia shook her head defiantly. Anna was already smaller than her and continuing to decrease in size so she figured she was in charge now. The only question was how small Anna was going to get.