Olga Borisov, from Rishon Lezion, was sentenced on Wednesday to eight years in prison for killing her four-year-old son Alon Yehuda, by drowning him off a Bat Yam beach on August 28, 2008.
The Tel Aviv District Court in July convicted Borisov of manslaughter, rather than murder, after prosecutors reached a plea bargain with her.
The court had found that she was plagued by bouts of depression and was in an unstable mental condition when she killed her son. However, a psychiatric evaluation determined her fit to stand trial.
On the day of Alon's death, Borisov was spotted by youths as she paced up and down the beach, mumbling that she had drowned her son. Passersby located the boy in the water and jumped into the sea to save him. Paramedics arrived on the scene moments later and tried to resuscitate the child, but eventually pronounced him dead.
Borisov admitted to the crime after she was arrested, telling police during her interrogation that she had planned to take the boy's life a few days earlier, as he had been diagnosed with Attention Deficit Disorder (ADD) and was becoming a burden on her.
Abe Selig contributed to this report