The Bucks County Courier Times reports 37-year-old Jennie Lee was also sentenced to five years' probation at her hearing Wednesday.
The Abington woman pleaded guilty in April to statutory sexual assault and corruption of minors for the encounters with the teens, who were 15 and 17 at the time.
Lee told a Montgomery County judge she had engaged in an explicit online chat with the older boy and was blackmailed into having sex with the teens because they threatened to tell her son's classmates about the conversation.
But the Courier Times report says Judge Steven O'Neill told Lee she had turned off her "moral internal compass."
Information from: Bucks County Courier Times, http://www.phillyburbs.com