While this was going on, the lady called Amelia was still standing where she was. She didn't know what was going on. She didn't know if the voice in her head was gone or if she could leave. But she didn't dare to take the risk to leave.
She doesn't know where the voice in her mind is coming from or how she is being made to feel pain, but she knows with uttermost certainty that she doesn't want to feel the pain anymore.
Actually, in this moment, she is still feeling some residual pain. This pain is similar to a migraine. It is so bad that it feels like her head is about to split apart.
She is feeling residual pain because the pain doesn't disappear completely when they stop activating the Bondage snake in her mind. There will still be some pain due to the injuries in her mind caused by the previous activation of the snake.