Yes

Jaune found himself camped out by the public restrooms down by the cafeteria. He needed a test. Something small, but large enough to prove Emerald could be controlled by the book. And he had the perfect plan.

He watched as her and Mercury entered the cafeteria. She was gleefully chatting away, while Mercury was providing the occasional word of response - that smug look on his face the whole time.

He looked down at the book.

"Emerald Sustrai will go to the Beacon cafeteria for food. Once there an extreme horniness will overcome her. She'll excuse herself to the nearest restroom - accidentally enter the men's room, but still go into a stall to masturbate."

Jaune stood up and made his way to the men's room, entering one of the two stalls and sitting down.

Shortly after, the door opened. He heard the rapid pattering of footsteps as they rushed for the stall, quickly slamming the door.

"Is it her?" He thought. He realized he didn't really give himself any opportunity to find out. But thankfully, something came to him.

"Oh... Cinder..." He heard her whisper, a slight wet sound being heard from the other stall "Yes.. I'll be a good girl... Mmmm." She quitely moaned as she continued fingering herself.

Jaune had to hold back his laughter. Not only did it work... But he found out that Emerald had a little crush on Cinder. He made a mental note - it could be useful in the future...