She laughed a bit while the old man was sitting there trying to escape. She was in the dark corner of the room where he couldn't see. "Well, well." She chuckled. "You harm your son and cause him to get pregnant. You don't support the fact that he's Transgender and gay. You make him feel worthless like he doesn't belong i n the world." 

The man spat. "You're pathetic. You have no right-."

She smiled calmly. "I have every right. You do not get to touch your son or to refuse to support him. You will get everything that comes to you." 

The father of her friend tried to escape the chair that he was in. 

She smirked at his pathetic attempt. "Very nice try." She pulled a butcher knife out of her bag and began to cut him. She smiled at his cries of pain, at his pathetic attempt to make her stop.  First, she cut off his left hand, which caused him to cry out in pain. Then, she cut off his right leg.

She enjoyed the blood that came out as he bled out. From here, she watched. She watched and cleaned up all of the blood, leaving nothing. Not a footprint. She didn't dare touch his clothes or leave the knife. she left the room and locked the door.

She had always been experienced... Ever since her first kill at 10 years old. Since then, she left no evidence of what she did. She was an expert.

She left a note and wrote with her left hand so that the writing did not match her own.
Men who abuse their children will get what is coming to them.
Justice will be brought this way because the United States Justic system is absolutely garbage.
This will continue until the system gets better and actually gives the victims the justice they deserve.

No fingerprints were on the paper. No evidece could lead back to her.