Why

A daughter's questions to her parents after her brother's death

Why didn't you try harder?
Why did you give up?
Why did you make it so easy on him?

Why, were you afraid?

Why didn't you want to do an intervention?
Why did you give him the keys to the car the day after his first OD knowing he was going to get more?
Why did you enable him?

Why after 2 years since his passing do I still ask these unanswered questions that I will never say out loud?