You're in shock - your world has been rocked to its core. You have a lot of support and it isn't your fault - you didn't Cause it. Do your best to let the shame and guilt go because it isn't something you can Control. Calling 9-1-1 is the best thing you could have done.
I was watching OWN and Suze Orman was on. She said, "Like they tell you on the airplane, as a mom, you have to put the oxygen mask on yourself first and then your children, because if you stop breathing, what happens to them?"
They didn't only witness their father putting the family in harm's way - they also witnessed you, getting the family - including their father - to safety.
breathe.