She is playful

"What have you done to me!"

A logical reaction. You expected this.

"I have combined you with the essence of an animal." You casually explain to her.

"What ... why would you do that?"

You paced around the table, explaining your goals to her.

"The world has very few creatures in it, my dear. Every day, many species go extinct, but none are added to it. This is my way or repairing that error. With you, I have given nature a new species. One that is based on the human, the most successful species to date, and I have improved on it."

Your victim was shocked.

"You ... improved me?"

"Yes! With this new body you have gained flight, greater beauty, improved awareness. You are better then you have ever been before."

You had thought she would rejoice, but instead she was playful about it.

"Will I be able to make somersaults?" She inquired.

You were confused. "Excuse me?"

"Somersaults ... in the air?" She explained.

"Uhm ... yes, why not?"

Her face lit up with a childish smile. "Sweet, can I try?"

This girl was strange. She didn't ask about her transformation or what kind of magic you used. She just wanted to try out her wings. Almost like a child which had just received it's newest toy.

"... yeah sure." You said.

With a wave of your hands, the straps unfastened themselves. The girl quickly stood up on the table and spread her wings.

This was the very first time you saw her in her full glory. Her golden hair flowed over her shoulders. Her skin seemed so gorgeous. Those breasts were so full, ripe and inviting. It was as if they were asking you to touch them.

All around her there were these gentle, gorgeous colors. They drew you into her beauty and made your heart beat faster.

It took you a while until you realized those were really her wings, not some magical effect.

She then moved her wings. The first times were to find out how they supposed to move. Then their movements became faster. Eventually, she was able to move them fast enough to be lifted from the ground.

She fluttered a little higher before she she leant backwards. While she was suspended in the air, she turned around all the way. Once she hung upside down she turned to you and giggled.

"Hihihi, this is fun."

"I can imagine." You replied.

"I cant wait to try out the other things I can do."

"Feel free to try out anything you like." You say. "As long as you don't break anything and don't leave this room, you can do anything you want."

Like you warned her, she did not attempt to leave the room. She was usually too busy playing around. She didn't even seem to be aware of her nakedness. Never once did you notice her hiding her breasts or groinal area. She would simply flutter around your laboratory completely nude and didn't even care if you stared at her for a lengthy time.

You were happy, your experiment was a huge success. However now, you had a butterfly-girl to deal with.