Damn is right. Relationships seem to be the biggest cause of suicide.
So sorry for the loss of your aunt and Ray. You say you should have known...but you know that we don't get to know that stuff all the time. My son committed suicide and I still find times when I ask how I didn't know that he was in that much pain.
Then I come on here and hear the pain of others' and how they want to commit suicide. My heart breaks for them and I wonder where their mothers, fathers, brothers, sisters, and friends are. I wonder why we don't really hear people when they cry out in pain. And I wonder, if anyone here committed suicide, would we ask why we didn't know or what we should have done? I guess all we can do is listen, offer support and encouragement and hope to help them find their way back to "life."