"Look," Sarah grinned at Ms. Collins, "Why don't you just fuck off."
The teacher didn't miss a beat.
"The principal's office," she said, staring Sarah down. "Right. Now."
"I'm going to deal with him in my own time," Sarah grinned, leaning back in her chair defiantly. "Let's have some fun here first."
"Sarah McMillan," Ms. Collins said, grabbing Sarah's wrist. "You will do exactly as you're told."
"Actually," said Sarah, snapping her hand away, "It's the other way around."
Sarah touched two fingers to the stone, pushing it down against her cleavage.
"I wish," she smiled, "That you would do exactly as you're told."
"There no--" Ms. Collins began, again grabbing Sarah's wrist.
"Let go," Sarah said, "And shut the fuck up."
Ms. Collins' hand shot away from Sarah's wrist as though it was propelled by an invisible force. The teacher was so shocked by her inability to control her hand that her first reaction was to make a noise. She couldn't do that either, though, and her eyes went wide as she realized she couldn't open her mouth.
"Whoops," Sarah grinned, "Cat got your tongue?"