Sometimes the best way to support someone is to take a giant step back and let them find their own way...or not.
And be careful of the anger, it will eat you alive if you let it. They say that holding resentments is like drinking poison and expecting the other person to die.
Anger, resentments, and fear are demons we each have to deal with for ourselves. Nobody else can "fix" them for us. I'm told that the antidote to resentments is forgiveness, which is not about condoning what was done, but more so about letting go of the pain we attach to them.
Hugs