Perfect!

Once upon a time, a family member who exhibited "destructive narcissistic patterns" attempted to drive a wedge between me and others. They were only partly successful, both due to their own instability and to my documentation efforts. That series of incidents occurred before the onset of the depression that has taken me out of the mainstream of life. I do not believe I would now have the strength to sustain defensive efforts against a similar assault on my relationships. Damage remains, but is long irrelevant.

You can only do so much, Turtleboy, and your closest, your "real" family is most important.