Crazy Dying Mother-In-Law: Poor Me!

Dear Judy,

 
 
  I need your help. Or someone’s. My mother-in-law, who has metastasized breast cancer, is obsessed with her son, my husband.  I am the target of her malicious and often vicious attacks.
 
 
  She believes I am not good enough for him.  Actually, I am his 3rd wife and no one before me was good [...]