SALEM – A Woburn woman who admitted robbing two Lynn convenience stores and a taxi cab driver in 2010 to support her heroin habit will spend two years in jail and be on probation for four years.Emily E. Landry, 28, of 65 High St., pleaded guilty last month before Judge David A. Lowy to three counts of armed robbery as well as larceny from a person and armed assault with intent to rob before.Sentencing had been postponed until Friday.In handing down the punishment, Lowy acknowledged that Landry “has done a wonderful job at redemption,” but explained that if there is no prison term “public trust is broken,” noting she robbed convenience stores and used a weapon.The charges arise out of a crime spree that began on April 24, 2010 in which she robbed a Lynn taxi driver and two local convenience stores at knifepoint on April 25 and April 26.She also admitted trying to rob a 7-Eleven on Lynnfield Street in Wyoma Square on April 27.Defense lawyer Alice Jayne sought probation for Landry, pointing out to Lowy that she had no prior record before the crime spree and has been successfully attending various drug treatment inpatient programs since her arrest.Jayne went on to say she completed the drug programs and has since rejoined her husband and children and now wants to be a drug counselor.”There is nothing more she could have done,” emphasized Jayne.Assistant District Attorney Christina P. Ronan asked the judge to sentence Landry to three to five years in state prison, rather than a House of Corrections punishment, with probation based on the nature and circumstances of the crimes.Conditions of her probation imposed by Lowy are that Landry will receive drug treatment and counseling including residential inpatient drug treatment, random screens, attend Narcotics Anonymous (NA) four times a week, be employed or have five job applications on file.The judge credited Landry the 67 days she has spent in jail in lieu of bail on the case.