Please help me. Things aren't going well and i need hlp?

im 14. I moved to new york with my grandma because my dad was a jerk to me, but now my dad and brother have been arrested and are going to face many years in prison. Now my sister is all alone and was best friends with my brother. Should i leave my new home that i finally learned to love and go back to california with my sister or should i stay in new york?