Brooke Mueller 'BLINDSIDED' By Divorce Papers

01/02/2011 05:12 am ET | Updated May 25, 2011
  • 11/2/2010 2:15 PM PDT by TMZ Staff

Brooke Mueller feels utterly betrayed by Charlie Sheen, according to her lawyer, Sorrell Trope.

Trope tells TMZ ... when Brooke and Charlie signed a property settlement agreement back in May ... they agreed to wait a full year before officially filing for divorce. Trope says Brooke made the agreement because "she didn't want to make trouble for Charlie," who was in the throes of a trial for allegedly assaulting Brooke in Aspen.