I can't live with this anymore

I'm just done

I'm only thirteen and I feel like a mother to the six year old twins in my family

My mother and father are divorced but they live in the same house

Me and my sister have the same dad, my brother has a different dad, and the twins have completely different dad

We all have the same mother and love in the same tiny house

I think my brother has a mental disorder but nobody else listens

They just yell

He will go through the trash without reason, and do everything twice

Like pick a cup up off of the table, take a sip, set the cup back down on the table, slightly pick it up and set it back down again

I also have found pee on the floor of my bedroom twice and we have no pets

My aunt is glad and willing to take me in when I get old enough to go through the system...

But I don't know if I could leave my siblings and go through he system

And what happens if I don't make it and end up back in this house again

It's hard to loath and love your parents at the same time

I don't know what to do