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Lindsay Lohan's therapist says "Speed the Plow" role key to her recovery

Actress Lindsay Lohan is pictured on January 20, 2014, in Park City, Utah.

Andrew H. Walker, Getty Images

Lindsay Lohan's therapist is citing the actress's role in a London production of the play "Speed the Plow" as crucial to her recovery from years of addiction and court troubles.

The therapist wrote in a letter filed Thursday in Los Angeles Superior Court that the play has provided Lohan with a good daily structure and has resulted in a shift in her motivation for recovery.

Filings from a London volunteer organization where Lohan is completing her community service sentence also praised the 28-year-old's progress.

Lohan has been helping plan events and activities for CSV, a group dedicated to helping neglected children and disabled adults.

The letters prompted Judge James R. Dabney on Thursday to end Lohan's probation in a 2011 necklace theft case.