"I'm going to turn you into a frog!" Amelia announced theatrically.
"Oh no, please don't make me a frog!" Anna played along in mock horror. She was prepared to hop around for a while, make ribbit noises and even stick out her tongue and pretend to gobble down flies if it kept Amelia happy. It's not like anyone else would be around see her do it.
Amelia pointed the wand at Anna and shouted "Abra Cadabara!"
There was a sudden flash of light around the tall, dark blonde haired woman. When it disappeared Anna was gone, all that initially seemed to be left of her was a pile of her clothes on the floor. But there seemed to be something trying to escape from inside the clothing, and an unmistakable croaking sound coming from whatever it was.
Amelia gasped in shock and delight as a small, green amphibian leapt out from a leg of Anna's jeans and landed on the floor in front of her "No way, is that you Anna?"
The babysitter turned frog croaked in the affirmative. All Anna could do now was hope Amelia wanted to, and was able to restore her to humanity.