Lacey Spears, 28, was found guilty of second-degree murder last year, for killing her son Garnett by spiking his hospital feeding tube with toxic amounts of salt.
It's suspected that Spears suffers from Munchausen by proxy, a syndrome which can cause parents to intentionally make their children sick to get attention.
In a recent jailhouse interview with author John Glatt (who is publishing a book on the case), Spears says she has become the target for bullying at Bedford Hill prison in Westchester County, New York.
'It’s been brutal here. Crimes involving children are considered the worst here,' she said, according to Radar Online. 'I hear them talking behind my back, calling me "baby killer," "child killer,"and "mother of the year". But I know it’s not who I am.'
'It’s been very hard, adjusting to being here,' Spears continued. 'You always have to look behind your back, and I don’t trust anyone. I don’t have any friends, but I have people to talk to.'
Her sister Rebecca told Glatt that prisoners who work in the kitchen have been dumping salt packets on top of Spears' food during meals.
Things have gotten so bad that Spears says jail officials have offered to put her in protective custody. But Spears turned down the offer because it would involve spending 23 hours a day in solitary confinement.
Despite her guilty conviction, Spears maintains she is innocent and says it was actually the hospital workers who killed her son.
During the trial prosecutors said that Spears' son spent nearly his entire life in and out of the hospital, undergoing unnecessary surgeries insisted upon by his mother before finally dying at her hands in January 2014.
Spears sought even more attention by writing about her son's sicknesses on a mommy blog called 'Garnett's Journey'.
In April 2015, she was sentenced to 20 years to life in prison for the crime.