She was already checked into a rehab facility where she died.........
It's unfair to any friends, co-workers or family to imply that there is some way they could have intervened in someone's addiction. I'm sure there's a lot of "One Steppers" here that will tell you that there is nothing one can do for a substance abuser, drugs or alcohol, unless they want to do it themselves.
I suspect that her addiction involved more than just alcohol. Such a tragic and unnecessary death.......
One always hopes that something can be done but it was her fault in the end... she did it to herself.
LLS