It didn't take Paint very long to find the library. She remembered the way from years of them running through the castle as foals. However, the castle used to be more bright and shiny. Now it was dark and dull. This trip through the castle also brought back the memory of Twilight's death.
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A young Paint and Midnight were running through the halls of the castle. They would often have friendly competitions such as who could perform the best spell, who could hold their breath the longest and other things. On this particular day, they decided to turn a race into a "who could scare Twilight first" competition. However as soon as they entered the library, Twilight said,
"Don't you dare think about it! I'm working with a very dangerous chemical. One mistake could mean death for me."
As they were about to leave, Midnight sneezed which startled Twilight causing her to let a single drop fall on her hoof. She gasped and rushed to the sink to wash it off, but it was too late. The chemical burned through everything but her bone. The two foals could do nothing but stare in horror as the chemical burned Twilight. She continued screaming until the chemical burned through her vital organs and killed her. The chemical continued to burn her until she was nothing but a skeleton. The foals screamed and ran out of the room and right into Flash Sentry, Midnight's father. They collapsed into sobbing heaps at his hooves. He didn't know what happened so he led them into a spare bedroom with a bunk bed. Midnight ran into the room and collapsed on the bottom bunk and Paint followed behind him and she laid across his back and they both cried each other to sleep while Flash went to find out what happened.