Just a quick little side thought, this isn't exactly canon in the fact that Brittany and Santana are together now and it's placed before Kurt comes to McKinley.
"What's up with you girlie?" the cold, clear sneer of Karofsky and the jeers of his cronies broke through Rachel's thoughts. She had figured she was alone in the hallway, but a little ways down, on the other side of it, stood Brittany, clutching a Biology book to her chest, staring at Karofsky through impassive eyes. Rachel felt her heart beat irregularly; just recently Brittany had come out as 'bi-curious' and began to date Santana.
The glee club had celebrated, even going out of their way to steal Kurt away from the warblers, for it but obviously the shallow-minded homophobic populous of the school was going to be less warm in their feelings. Karofsky's gang knew better than to mess with Santana, she could probably kick all their asses and still make it to rehearsal but Brittany was sweeter and less likely to attack. The fact that they had decided to go after her in a practically deserted hallway with no one around to help her just stirred Rachel's fury.
"I have to go to Glee rehearsal." Brittany stated calmly, wondering why these boys were so close to her. Karofsky stepped closer and she felt more confusion as he tried to grab her ass. "Excuse me," she said just a little bit cold, "but I have a girlfriend and she's waiting for me," she made to push Karofsky away but he was too big. With a high, cruel laugh he pushed her against the locker. The cronies shrieked in laughter as if it were an amusing jest and not sexual assault.
"Oh come on, no time to play for the little dyke? A bet that whore of a girlfriend you had wouldn't mind." His hands were back; Brittany felt a shiver of fear as she pushed more firmly against the man.
"I'm not lesbian, I'm bi-curious and Santana's not a whore." There was anger in her voice now and she pushed more fiercely against the man, struggling against him. Horrible memories of past childhoods were springing up and she was fast losing her resolve.
"Leave her the hell alone!" Rachel had finally had enough, and pushed her way through the small crowd of boys. They were shocked and so even with how small she was she was able to make it past them and to tug Brittany away from Karofsky before anyone of them had gone over the shock. "You already ran Kurt out of the school, and he was a better man than you could ever dream to be David, and now you're starting on sweet little Brittany! You should be ashamed!" Rachel gently but firmly pushed Brittany behind her, placing herself in front of her to yell at Karofsky.
He made to speak, probably about how a 'fag' like Kurt could never be more a man but Rachel interceded, speaking over his strangled half sentence. "And don't even make a 'gay' comment! It would be extremely hypocritical of you." Surprising his gang, instead of denying this 'absurd' accusation, Karofsky moved back from Rachel as if she was some small, dangerous creature.
"I know what you did to Kurt." She read the contemptuous look that darkened his face, "he didn't tell me, I could tell. And I swear if I ever see you harassing Brittany or Santana or making inappropriate comments, I'll make damn sure the whole school knows." With that threat hanging in the air thickly Rachel promptly turned, gently grabbed Brittany's hand and marched towards the staircase.
"Come on Brit, we can skip part of Glee class and I'll take you for ice cream." Rachel told the girl gently, squeezing her hand when she noticed how pale the girl was.
"Chocolate with rainbow sprinkles?" Brittany asked shyly. She didn't quite know why Rachel was being so nice to her, she was always simply dreadful to her but she was and her small hand felt oddly warm and comfortable in her cool one.
Neither girls noticed and Brittany would forever blame herself, as Karofsky seemed to unfreeze himself, anger returning from the temporary void Rachel's words had sent it to. They didn't notice as he charged them, the rest of his gang silently watching. They didn't notice until 'bitch' rang out in the hallway but by then it was too late; Rachel's small, warm hand was ripped from Brittany's as she tumbled down the flight of stairs, accelerated by the full weight Karofsky had put into the push.
Rachel screamed as she fell, every single jarring step feeling like a knife sliced through somewhere on her body, she heard a crack as she hit it with her shoulder, her leg came next, her chest burned as it slammed into one and everything blackened when with a sickening crunch she landed head first, sprawled onto the floor of the flight down.
She didn't notice as Brittany screamed bloody murder, running down the stairs screaming her name, as Karofsky was pulled away from the accident by his friends yelling at him to hurry. She didn't notice as Brittany clutched her, sobbing her name repeatedly and screaming for help. She didn't notice as the entire glee club in the choir room next door ran out, or how Mr. Schuester immediately went to call the hospital. She didn't notice as Tina and Mercedes began crying, begging her to stay with them, that help was on the didn't notice Puck punch the wall as a shaking, crying Brittany tried to tell them what happened or see Finn break into tears at the suddenly looming threat of losing someone he hadn't gotten to say he loved to, to ask for forgiveness.
Rachel didn't notice anything in the cold but comforting darkness that seemed to surround all around her, cocooning her in a pretense of safety.
I really hoped you all liked it because it's been floating around my head for a while now. Please tell me if you want me to continue because right now I'm figuring it as a one-shot.