Chocoegg333: Thanks for telling me. I've revised the comment at the top of Chapter 4. I've decided then that Pietro's little sister is a girl called Stella, who has the ability to control plants (like Poison Ivy in Batman). Thanks for reading!

The bell for the end of the day rang, it's shrill cry echoing down the corridors and bringing a smile to students and teachers alike. Screeching children fled their classrooms and ran in all directions: to the playground, to their parent's waiting cars, to their near-by homes, to the candy shop. Tia ran down with the other children to the playground, climbing and sitting atop the turret of the plastic castle, her young friends hooting at her as she sung that she was the king.

The sun began to set and all the other children left. One by one, their parents coming to pick them up, soothing their grazed knees and bruised elbows. They waved and called goodbye as they left Tia alone on the playground. She tumbled down the slide, her little feet carrying her in a circle around the silent playground. She didn't want to go home. Tia didn't understand why her parents were always hushed, why her father was rarely around, why the house was a place Tia never wanted to be.

She sat beneath a large tree covered in lush yellow flowers and looked up at the darkening sky, pretending the flowers were bright yellow stars. Tia lay back, falling into the cool grass as she stared at the sky, watching the silver moon hovering above her. It kept her company. Tia closed her eyes, imagining flying to the moon. Her feet on it's soft grey surface, she was sure there'd be a playground there too, just like the one at school. She imagined the colourful fort, looking out across the universe as it sat on the ridge of a moon crater, watching out for her, Tia's safe place.

Tia opened her eyes and rubbed them in disbelief as she took in the empty courtyard. Where was she? Tia looked up, there was the yellow tree, and higher still, there was the moon. Tia was shocked and confused. She knew she was still at school, but the playground was gone. Who had stolen it? Where had it gone? Tia ran across the grass, circling around the area where the slide used to be.
"I want it back. What did I do?", Tia wondered. Her eyes were blinking and fluttering as she began to cry. Everything good was leaving her. First her dad, now her precious playground. She closed her eyes and sobbed.
"Please moon", Tia begged, "never leave me."

Tia heard a metallic twang and opened her eyes in shock to see what had produced the noise. There in front of her was the playground, just as it had been before, except now it was covered in frost. The chilled metal poles pinged and cracked as they expanded in the heat. Tia shambled towards it, reaching out her hand to touch the frost-laced slide. She screeched as her fingers made contact with the metal, searing her fingertips with icy coldness. Tia jumped back, breathing quickly as she tried to understand. She just knew it was her fault. It must be her fault, she was the only one here.

Later that night, Tia sat on the couch with her head in her mother's lap, as her mother stroked her hair. The news crackled in the background, the anchor smiling into the camera as he swivelled his chair to face another camera.
"In breaking news, a six-year-old boy, believed to Thomas Carr, was found dead today at St Anton's Primary School. An initial assessment has suggested the boy died of hypothermia and severe frostbite, even appearing to have been entirely frozen. Authorities can offer no explanation on how this occurred in the middle of summer. Police are urging witnesses to come forward so closure can be provided to the family, and the circumstances surrounding the death can be determined. Thomas was found curled up under the fort and wasn't discovered until his mother came to pick him up from school. She crawled underneath the fort to find him, at first thinking he had fallen asleep when he didn't respond to her calls…"

Tia's eyes glazed over as she tried to process the news story.
"Isn't that your school, honey?" her mother exclaimed, excited to see a familiar location on the television, despite the gruesome story. She tucked Tia's hair behind her ear as tears rolled from Tia's eyes and she began to shake in her mother's lap.
"What, did you know him honey?" her mother crooned, pulling Tia into a hug. Tia shook her head, she hadn't recognised the name. He had been younger than her.
"I know it's sad for you to hear, honey" her mother said, trying to console Tia, "But imagine how the little boy's parents feel right now". Tia didn't want to imagine Thomas's parents. She didn't want to imagine anything ever again.
"I have- I have to, to say something to the police" Tia blubbered, her crying becoming hysterical wailing. Tia grabbed at her mother's hands as her mother patted her back.

"Honey, were you a witness?" asked her mother, her brows furrowing in concern as she sat up and took Tia's hands in her own.
"Did you see who froze, who murdered, that little boy?" Tia was crying too hard to nod her head. It had been her, hadn't it? But she hadn't seen the little boy, what had she seen? She didn't understand what had happened.
"Honey, this isn't your fault. Some twisted soul has stolen this little boy from school and murdered him, before hiding his body in a playground. You taking the blame won't bring him back. No-one can do that now", Tia's mother soothed, holding Tia close as she sobbed, slowly fading to stillness and silence.
"It wasn't your fault" her mother whispered, as she left to get Tia a glass of water. Tia shook her head. What her mother had said had been untrue.
Tia knew it was her fault.

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