Sometimes drugs don't make the pain go away.
With time your family will forgive you. Even if its not your fault.
Sometimes the PTSD is too much to bear. Resent builds up. Things become toxic.

It takes time for the PTSD to heal. It may never heal fully, but it will evaporate over time.

There is a lot of fear. A lot of reason to fear. This world is not easy. We simply can't live in peace and harmony until judgment day. Rage, rage against the dying of the light.