SPOKANE, Wash. -

Destiny Ahenakew, the mother accused of throwing her toddler over an embankment, previously lost custody of her four-year-old daughter in 2011.

At her first appearance Monday Ahenakew, 25, seemed calm and even giggled a little before she was read the charge she's facing, one count of child assault for tossing her 15-month-old son over an embankment on Saturday, saying that "the devil made her do it."

She remains in jail on a $50,000 bond.

Even if she makes bail she cannot see her son.

According to court documents she previously lost custody of her 4-year-old daughter three years ago. Her daughter's father wrote, “I'm afraid for my child to be in the care of her mother only because she is not stable, has no home and no way to support our child and hangs around unhealthy people."

Recent court documents show she was treated for substance abuse; police are investigating if drugs played a role in Saturday's incident.

“Obviously something was not going on with her in a manner that's normal for a mother to do this to a child,” Spokane Police Major Crimes Lieutenant Mark Griffiths said.

Ahenakew's family members told investigators that she was homeless for the last two weeks and before that was staying with a friend. According to court documents they say she needs both mental health and substance abuse treatment and she will undergo a mental health exam.

She is set to appear in court again next Tuesday for her arraignment.