Mariam Zuhaib/AP
- Dianne Feinstein alleges that the trustees for her husband's estate have engaged in "financial elder abuse."
- Katherine Feinstein, who filed the suit on behalf of her mother, alleges that Feinstein is being cut out of millions.
- The suit is the latest episode in a fight over the late-billionaire Richard Blum's estate.
Trustees overseeing Sen. Dianne Feinstein's late husband's estate have engaged in "financial elder abuse" by trying to cut her out of millions of dollars, a suit filed by Feinstein's daughter alleges.