Try to help her out

"Neo, our of curiosity, your inability to talk... Is that physical or mental?" He asks.

Neo simply shrugs.

"Okay... Let's try this then. Neo, if you have some kind of mental block preventing you from speaking, I want you to look deep into your mind and remove that block... Now, try to speak" he said.

"...kay..." She replied.

Both Cinder and Emerald looked at him a bit shocked.

"Truly?" Cinder asked.

"Wow... That's... Wow..." Emerald said as well

"Good. Now Neo, I want you to be... Let's say a sort of partner in crime. I know from Emerald that you're a bit of a prankster, so let's have some fun together. When you wake, you'll want to help me hypnotize more girls to mess with, and we will work together to have some fun around here."

"This is a terrible idea" Cinder sighed.