A/N: Since I hadn't originally planned on making more chapters, this will probably go extremely slow. Please bare with me as I try and go as fast as I can. Thanks!
Sibyll just sat there for the next few minutes, not truly comprehending what she had just seen. With her heart beating furiously, she clutched the sides of her green chair, trying to not bring any attention to herself. When her heart finally calmed back down to it's normal state, she let a relieved sigh of air and unclenched her bare-white knuckles from the sides of her chair. Trying to be as inconspicuous as possible, she took up the extra cloth from the end of her turtle-green robe, and wiped the sweat off her face, attempting to make it look as if she had an itch on her forehead. Finally, after three minutes of straightening out her robes and leaning forward in her chair as to show that she really was interested in what Professor Binns was saying, she chanced a look around the room. Looking from Professor Sprout (who was getting in a quick cat-nap) to Professor Flitwick (who was busy trying to make iridescent bubbles come out of his wand in the shapes of different animals) and further on to the rest of the staff, she assessed that no damage had been done and that nobody had noticed her sudden awaking from her dream. Finished making a complete circle of the room, with her eyes, Sibyll then relaxed back into her chair and concentrated back on her dream that she had just had. By now, she could only remember fragments of it, but she still knew that it was terrifying enough and that she just had to remember it again. Alls that she could remember was the deaths of most of her colleagues, Harry Potter falling to the ground and the Dark Mark up in the sky. These three scenes made no sense to her whatsoever and she made note to herself that next time she have one of these dreams to immediately write down what she'd just seen. Sibyll squirmed in her chair for the next few seconds, not knowing exactly what to do: she had two choices- she could stay there in the the staff meeting for the next two hours and listen to Professor Binns (who was only to mid-December and the massive explosion that the Weasley twins had caused in the hallway leading to the Potions classrooms and the twenty-odd Syltherins who had been injured by it) recount the rest of the year, day-by-day, or she could leave, go up to her tower and make the Remembrance Potion, which she hoped would help her remember more of her dream. Sibyll didn't need any time to make her choice, and just as she had abruptly come to the meeting, she got up and left (with a hard glare from McGonagall).
As soon as Sibyll reached her tower, she started making the potion, for it was a lengthy two hour process and she wanted to write down what she remembered from her dream and take another nap. As soon as she had finished stirring the last bit of willow root into the potion and had written down the three fragments of her dream, she back into her room and quickly fell asleep.