Mom Who Killed Daughter, Asks Court To Spare Son

November 18, 2010 Updated Nov 18, 2010 at 8:00 PM EDT

By WKBW News

November 18, 2010 Updated Nov 18, 2010 at 8:00 PM EDT

Buffalo, NY

Attorney's for 31 year old Luke Wright claim he too, along with his half-sister Laura, endured years of physical and sexual abuse. Abuse so severe his attorneys claim it left Luke mentally retarded. Cameras were not allowed in court Thursday, but attorney's for Wright told a judge they have evidence Luke was beaten for years by his step-father and other family members. They claim tests prove Luke became mentally retarded as a result. Not only was he*physically abused, his attorneys say Luke was also sexually abused by his step-father. Luke's mother Eva Cummings, admitted to suffocating her 23 year old daughter Laura Cummings to death last January told attorneys Luke should not be blamed for Laura's death because of his mental issues. On Tuesday, a judge sentenced Eva Cummings to 57 and a third years to life in prison. Eva plead guilty to suffocating her daughter to death in their family home. Medical experts for both sides will examine Luke to determine if the insanity claims are true. Findings from those reports will be presented at trial. Pre-trial hearings and jury selection in the case are set to begin in the spring.