Broken

Rainbow Dash shot forwards, getting ready to complete her last Rainboom, despite her stiff wings. Below, her friends were watching in admiration at the beautiful rainbow streaking through the sky. Lightning Dust felt worried that she may lose the deal.

Rainbow Dash started the slow procedure of stretching, the pain in her wings increasing with every second. She realized now that this was impossible, that Lightning had set her up, for revenge. A way to get back.

Her wings felt like they were burning up. As she got stretched out, Rainbow knew she had pushed this too far. With a sickening "SNAP", her cyan wings broke. She thought now she would stop, but it wasn't over.

The pain crept down to her front legs. Soon they cracked too. Finally, her last limbs, her hind legs, were broken. Out of pain and shock, Rainbow Dash went unconscious.

Meanwhile....

Twilight and the others watched as Rainbow Dash stretched further and further. She was almost there. But everypony could see something was wrong. Her wings went limp by her sides and her legs seemed not to function. All of a sudden, the Sonic Rainboom failed, and the six other ponies watched in shock as the rainbow pegasus fell.

Fluttershy and Pinkie shot into the direction of their falling friend. Their hooves outstretched, the two mares felt the seemingly-dead pony fall into their hooves.

Soon the rest of the element bearers came to see their hurt friend. Tears welled up in their eyes as they saw the legendary pegasus looking so fragile. Anger built up in their hearts as they realized that Lightning Dust was responsible for this horrible deed. They turned around only to find themselves facing an empty clearing; the harmful pegasus was gone.

This was really unexpected. Lightning didn't ever plan to hurt Rainbow Dash. She wasn't such a cruel pony. All that Dust wanted to do was humiliate her peer. But now, seeing that she was responsible for hurting the rainbow-maned pony, Lightning had to flee. What if she got arrested? She was already low on money anyway.

But Lightning knew that they would track her down. Everypony knew that she probably lived in Las Pegasus, which was true. So after grabbing her things from Derpy's house, Lightning Dust set off to another city: Manehatten.