Hi there, sweetie. Do you want to play with this toy?

You look up at her and giggle

It's still so strange to see you like this. You used to be my big brother, but then the experiment went wrong. I'm sorry about that.

You look up at her in confusion

I know it's hard to communicate with me now. Your speech is different and you can't tell me what you want or how you feel. But don't worry, we'll figure it out together.

She smiles down but is still guilty and sad over what she did to you.