Sandra’s brother regularly gets letters from their mother outlining how horrible Sandra is and going into great detail about Sandra’s terrible behaviour.
Like my MNM, Sandra’s mother will take a tiny grain of truth and build on it, massage it, and twist it to give it new meaning.
“Triangulation” can be defined as indirect communication where one person acts as messenger between two others, often times altering or fabricating the message to suit the tale bearer’s objective.
Triangulation is a common tool of the narcissist and it goes hand in glove with “gaslighting” (previous entry) and “projection” (next entry).
“Confirmation bias” is our tendency to believe things that support what we already believe (or that which we heard first) coupled with a tendency to discount things that do not support our existing beliefs.