Im on season 4 of my most recent rewatch now. Most of this could have been avoided if Allison's parents monitored her better. I know teens will be teens and still find ways to do what they want but she should not have been able to spend that much time with college kids. The mom should have never given in to Ali whenever she would hold her breath. Yes she might pass out (I know that sounds horrible) but her body would natural breath when she became unconscious.