None of us will ever know the truth.
A girl I was at school with, really clever, very pretty, went completely off the rails at 17, ended up with addiction and alcohol issues, spent some time in prison for drugs offences. She came from an apparently stable background, with doting parents and an older sibling. Alcohol and drug addiction is such a complex subject, there's no one size fits all. She is well and has been sober for 7 years now, but she is now addicted to Jesus and spends all her spare time going to this new age Christian church. She's happy though.
I wonder, had Paula survived, would she have found a better crutch than drugs and alcohol?