Xalune - Echoes from the past

After reading yet another great older brothers/younger sister story, where the family gets reunited after years of separation, the sister keeps the secret that she was abused and assaulted all along, and the brothers conceal their work in the mafia, I decided to give it also a try.

The output of my story was initially to turn this around with openness and unconditional support and the torture should happen right in front of their very eyes.
Because no story is complete without the (un)necessary bloodshed, action, humour and, of course, a bad guy.
And who knows, to throw everything completely upside down, the main character may not survive.

I won't write warnings above each chapter, because most of them contain violence, blood, torture, etc.
Constructive criticism is welcome.
Ow, and English is not my first, second or third language. So if I mess up somewhere, let me know!

Description:
In a dystopian world, where the strongest prevails, having peace is a luxury.
Especially when someone from the past is out to destroy everything we have built up over the past 15 years.
And with Christmas approaching, our group get to face ten hellish days.

Preview:
In his fury, the chains have rubbed his wrists and neck raw, despite me trying to calm him down. He suddenly calms down when the screams in the cell next to us switch to the sound of bones breaking. Now he sits with foam on his lips and his eyes wide, looking that way. After ten minutes, the sounds of the boys in our cell have died down, and we all look at the wall that separates us from the crackling of the breaking bones. And then suddenly all is quiet.

After a few silent minutes, our cell door opens slowly. From the ball of light from the ceiling, the little girl in the doorway is illuminated. She is completely covered in blood and doesn't move.
Then she opens her eyes and carefully walks towards us.

And despite everything, my first impulse is to crawl backwards, away from the unnatural calm radiating from her.