Cody still hadn't entered any room, which was quite problematic. So Sarah used her powers to make him hear her voice like she was coming from a nearby one. “HELP ME! THE DOOR LOCKED ITSELF! ANYONE CAN HEAR ME? PLEASE!” The werewolf-witch also added some loud banging noise, to better sell her trap.
And it worked, Cody spinning in toward the door. “SARAH?!? Don't worry Sarah, I'm going to free you!”
Cody ran toward the door, shoulder first, hoping to break it down. But the castle wasn't about to let himself be damaged and opened the door before Cody could hit it. The teenage boy got far enough inside the room for its entrance to shut down behind him. He tried to reopen it, but the door was locked again.
Not seeing any point in insisting, Cody walked inside the room, calling for Sarah. …Without getting any answers.
He finally stumbled into a strange mirror producing a green glow. Cody couldn't help but look at his reflection, like entranced by it. Slowly, green scales covered his skin, before his legs started fusing into a serpent body.
Cody was now a naga, but the change wasn't finished yet. His long hairs became snakes while his eyes gained the power to change anyone looking at them into stone. …Anyone outside of the resident witch, that is.
Speaking of Sarah, she waited until Cody was fully changed before entering the room. The first thing she did upon entering, was admiring her new gorgon, a male one.
At first Cody didn't know who was this hirsute being who studied him so intensely, but his careful observation eventually let him know she was no one else than Sarah. Overjoyed the gorgon hugged his friend.
Ordinarily, Sarah would have been happy to oblige, but each time someone was changed into one of the castle's monsters, Sarah's mind changed, slowly changing her in a more proper witch. So when Cody hugged her, as a thanks she planted her knee in his genitals, sneering “Did you really think a powerful witch as myself can stay friend with a lowly monster such as yourself?” When he didn't answer, the witch added “From now on you are my slave, and will call me MISTRESS Sarah.”
The werewolf-witch exited the room without waiting for her pet-gorgon's answer. Sarah didn't know why she suddenly became so cruel, and didn't care. All she DID care about was that she loved it, thinking she should be cruel more often.