Smoothly until it doesn't

Samantha spent the whole day on edge. Every lesson she had she expected something to happen. Lunch was the worst. Samantha expected to be humiliated in front of everyone. She was waiting for her clothes to vanish or to be controlled like a puppet but nothing happened. Samantha ate and chatted with her friends. Her friends noticed Samantha was nervous but she managed to allay their concerns. By the end of the day Samantha had convinced herself that Tina and Tess must have gotten bored with the doll or the magic had stopped working.

Until Samantha found herself walking the wrong way. Instead of walking out the front gates like she usually did, Samantha was heading towards the back of the gym. She tried to turn around but it was like her body was on auto-pilot. It took Samantha less than a second to realise that it was the Voodoo doll. She just hoped it was the goth girl and not Tina and/or Tess that had the doll. Rounding the corner Samantha's heart sinks. Tina and Tess are leaning against the gym, both have evil smiles on their faces.

"Here she comes," announces Tina like Samantha was a long lost friend. Samantha could feel nothing but dread as she approached the girls.

Tess stood up off the wall when Samantha came to a stop. "Our little friend from earlier showed us a few new tricks." To emphasis her point Tess waved the doll in the air. "How's your day been going?"

"After the humiliation in the library I spent the whole day waiting for something else to happen. I found it difficult to concentrate in lessons. I was always on edge, especially during lunch. Towards the end of the day I began to relax," Samantha replied.

"And now?"

"I am filled with dread." Samantha started to feel more anxious with how she was answering the questions.

"What's the worst thing we could do with this doll?" Tess's words were dripping with menace.

"Give it to Marcus Rosebud." Samantha was shocked with her answer. Her hands flew to her mouth in an attempt to stop the words escaping.

Samantha's reply momentarily stunned Tina and Tess but the look of horror on Samantha's face made the two girls burst out laughing. "Well Tess," giggled Tina. "It looks like someone thinks we can be cruel enough!"

"You know what Tina? I think you're right," Tess replied with mock indignity. "I think we should prove how cruel we can be."

"No please!" Samantha begged.

How cruel are the girls?

Feel free to leave any ideas in the comments section. It can be traditional Voodoo stuff like sticking pins in the doll to contorting and commanding the doll. No idea too perverted!