What she says, goes

Dorothea made a wish that no matter what she said about anything or anyone would become reality, even if it wasn't true. She could turn a person into a living piece of furniture, or animals, and the world would view them as having always been that way.

But Dorothea didn't want to do any of that for now. She just wanted to do a small test first.

Professor Byleth was a cutie. Dorothea swung both ways, and nearly everyone knew it.

"During lectures, Professor Byleth will be naked, and will play with her tits while lecturing."

Dorothea wondered if her wish worked. She gathered her books and headed to class, in disbelief her stoic faced professor would do what she specified.