Dear John,

Tell her how you feel.  Tell the other family members how you feel.  If no one agrees, then at least you tried.  Sadly, selfish people don’t change their ways until they themselves want to (as with most negative characteristics that need to be banished).

Take solace in the fact that, if she continues on her self-focused track through life, it will catch up to her and rob her of some genuine opportunities, friendships, and happiness.– M