Snohomish County Deputy Prosecutor Travis Johnson told The Daily Herald there was insufficient evidence from police and medical examiner reports to go forward with a manslaughter charge.
The medical examiner concluded that 51-year-old Richard Balch of Auburn died Jan. 12 of alcohol poisoning. He also had heart and liver disease. A struggle may have contributed to his death but was not the cause.
Witnesses said several people were drinking and smoking marijuana at the mobile home when Balch and the 50-year-old woman argued over an ex-girlfriend. Witnesses later found her on top of Balch in back of the trailer. She was intoxicated and said she didn't remember.