A woman accused of slowly poisoning her son to death to gain attention on social media may have lied about sexual abuse, eating disorders, abortions, and parenthood, say those who knew her.

Lacey Spears was indicted this week in White Plains, New York, on second-degree charges of depraved murder and manslaughter in the Jan. 23 death of her 5-year-old son, Garnett Paul Spears.

The boy died from acute sodium poisoning, and investigators say his mother injected high doses of sodium into his gastric feeding bag after medical personnel left the hospital room and then attempted to dispose of the evidence.

Investigators believe Spears may suffer from the rare psychological disorder, Munchausen by proxy, which causes parents to harm their children to gain attention and sympathy.