According to reports, the teenager was a close friend of the woman's daughter, and was allegedly given alcohol by the 36-year-old when he came over and they'd have unprotected sex.
A complaint was made to police in 2015 but when they investigated, the woman denied any offending. Then she gave birth to his son.
A paternity test was completed, confirming the teenage boy was the father and a victim of sexual abuse.
The woman was sentenced to four years on Wednesday in the Victorian County Court after pleading guilty to the persistent sexual exploitation of a child under 16.
'Your offending was in part motivated by selfish sexual gratification,' said the sentencing judge.
'The fact you used no contraception and have given birth to a child only aggravates your offending.
'You have destroyed the victim's childhood and the well-being of his family.'
Unable to stay with the woman, the Department of Health are preparing a care plan for the baby and the victim's family wish to play a part despite the circumstances.