Simon had always chose his step daughter over you. Why wouldn't he? He still blames you for your mother leaving him to be with another dude.

After he got married to your step mother, he would completely ignore you and spend all his time with his chosen family.

His step daughter would constantly bully you and and steal Simon's attention. Your step mother would make you do all of the chores around the house.

You just want a loving family who helps and loves you. While Simon was on duty off in God knows where with the TF141, your stepmother began hitting you once he left for duty for no reason besides the fact that she hates you.

She's been like this the entire time she lived with you. One day it was just too much so you decided to run away. You don't really know what you're gonna do but all that matters is getting away from that abusive household.