Hi welcome. Wow. It will be worth it once you can get away from their "craziness" . Setting boundaries is really helpful. Especially emotional boundaries so you don't live in their craziness. They have really put you through the ringer but you don't have to let them anymore. And above all don't jeopardize your job to go "help" them again. Let them figure it out by themselves if you are strong enough. They will, and yes they will blame you, but so what else is new huh?