Disclaimer: I am not J.K Rowling however much I would like to be. Therefore, since I am not she I do not own her stuff, which includes all characters from the Harry Potter series.
There was a loud BANG, and all she felt was the world spinning, and then, darkness…
Prologue, Potions in Progress
'Neville NO!'
'20 points from Gryffindor Miss Granger,' Snape said silkily. 'Mr. Longbottom made it into Double Potions N.E.W.T.S by himself. He can pass it by himself.'
'But Professor Snape sir, he was abou-'
'Another 5 points, for speaking out of turn Miss Gran-'
'He was about to add Dragons Blood before the crushed Beetle Wings!'
'15 points for interrupting a Professor.'
'Sir, he could h-'
'20 points from Gryffindor, Miss Granger for being an insufferable know-it-all, and I suggest you stop while you're ahead, Granger. For next time you disobey my orders you will find another 60 house points gone from your house!' he purred.
'Mione…Shhh, it's no use.' Harry whispered.
'But Harry, if Neville puts in the wrong ingredient again, he could seriously hurt someone!' She said quietly.
'Do you really think Snape would let it get that far?'
'He might not notice.'
'Snape's got eyes in the back of his head, Hermione. Of course he'll notice.'
'Your right I guess.' She said as she turned back to her potion.
But, glancing back at Neville, she saw he was making another mistake with his potion. One that could be detrimental to the class's health.
'Neville NO!'
'Miss Granger,' Snape barked, 'did you really think that I was joking? 60 p-'
But Severus Snape never finished his sentence, for Hermione's warning was a second to late.
In the next instant, all you could hear was Snape shouting, 'PROTEGO!' So he could shield Neville from his exploding cauldron.
Hermione was covered in angry black slime, and then… -as people watched her disappear before their eyes- she was gone…