Bellatrix was used to being treated like this, she was once again being dragged to the cold dark dungeons by the sixth form lads, for not tending to their every need. She didn't like it but was forced to do it, it was either her way or their forced way.
Malfoy had her tight in a headlock with Lestrange leading the way with his wand lit.
Thankfully, Narcissa was safely hidden in the room of requirement. They had both taken to hiding there when not in class, Bella had just been unlucky this time, she had been cornered on the way out of transfiguration and escorted back to the Slytherin common room. There was no escape on this occasion.
Down in the dungeons everything was ready and waiting for her usual punishment for her non compliance of Malfoy's requests. He expected everyone to do as he say but the things he expected were far from reasonable.
Her hands were placed in shackles, lifted above her head and she felt her feet leave the ground. She was suspended in the cold, damp air. Invisible binds holding her still, she couldn't move, not one muscle.
She heard a rip and knew what was coming. They used the same moves every time and she knew better than to try and fight against it, fighting only made it worse. The rip was her cloak being magically torn, she had lost count of the times she had had to repair her uniform. They didn't stop there, soon she was naked. Her milky pale skin was turning blue from the harshness of the cold on her form. Her nipples un-rousingly erect at the stinging draft the dungeons were serving. This was cruel but nobody cared. The only saving grace was that her baby sister was safe and away from them.
She heard the usual crack against the wall which was signal that her punishment was about to be served.
She was right, the cracking echo bouncing off the walls in the dungeon burst her eardrums as she once again experienced the excruciating pain of the invisible whip, magically being slapped against her already damaged skin, the scars of previous experience reopening once more, and the warmth of her blood running in a steady stream down her back and over her pale smooth curves, falling to the floor forming a pool below where she hung, awaiting more punishment.
Malfoy and Lestrange could hardly comprehend why she just hung there taking her punishment, so silent and so unlike her. They whipped her some more, putting all their anger behind the force, silently praying for a whimper or scream to escape her gently parted lips. They were that involved in their punishment it was almost too late when the dungeon doors slammed shut behind her. They quickly threw the invisibility cloak over them that they had earlier stolen of that arrogant Potter, and hid silently in the corner, leaving Bellatrix to await the arrival of their guest alone.
Bellatrix hung there silently, not even taking note of their new arrival. The boys stayed hidden away in the corner like cowards, though recognising their guest in the dark one wouldn't consider them cowards. She wasn't to be messed with, this professor was silently strong and everyone in the wizarding world knew not to take her quiet gentle nature for granted. Professor Minerva McGonagall, she was a hard nut, so the boys thought it for the best not to move, not even an inch!Quickly, McGonagall magically broke the bonds holding Bellatrix suspended in the air, who fell softly to the floor and huddled in a foetal position on the cold damp ground, shivering and silently sobbing. McGonagall gently draped her own robe over her oozing cuts and gently stroked her hair as she silently sat close to the girl.
Bellatrix could almost hear the professor's mind racing as to what the hell had happened here but she silently appreciated that she had not yet attempted to speak until she was ready and in a state to answer. She slowly closed her eyes and soaked in the gentle and strangely arousing sensation of McGonagall stroking her soft curls, which were surely dampened by the cold air.
McGonagall sensed her appreciation of the gentle stokes Bellatrix was receiving, so shuffled a little closer to Bella and wrapped her arm around her shoulders pulling her close, allowing her to drop her head onto her soft chest.
Bella had never felt such warmth and comfort before, not even from her own mother. Half aroused and half in a slump of depression she allowed herself to be comforted and wrapped her arms around her professor, pressing her face hard into her soft chest, smelling warmth and a sense of love and home that she had never experienced.
Minerva lifted her off the ground and carried her as you would a child, back to her realm behind her office. Bella allowed herself to be cradled by her teacher and carried in such a way, savoring the warmth emitting from McGonagall. She was also relieved that she was away from them dungeons, she knew the lads would have seen her reaction to the way she was being tended to by her professor, and knew she would be made to explain herself, to them and to the woman who had come to her aid as to how she had got into such a state. This she did not look forward to at all.