Mom Accused in Salt Poisoning of 5-Year-Old Says Child May Be Responsible for His Death
09/30/2014 AT 06:45 PM EDT
She told authorities "the victim would once in a while play with his feeding tube and could have put something into it," according to a 43-page motion filed by the Westchester County prosecutor's office and obtained by PEOPLE.
And during "multiple statements" she made to police and doctors, she insisted "she did not murder the victim."
The defendant stated "that if she gave the victim the wrong medications or if she mixed something that killed the victim, that it was not her fault because the medications were prescribed," the documents state.
Spears, 26, of Chestnut Ridge, New York, has been charged with second-degree murder and manslaughter for the Jan. 23 death of Garnett, who died from salt poisoning. She is being held without bail and has pleaded not guilty to the charges.
The new documents are in response to Spears's defense attorneys' requests to have her statements suppressed as well as Garnett's lengthy medical history.
Defense attorneys David Sachs and Stephen Riebling also want the judge to prohibit any mention of Munchausen by Proxy, a disease where a parent sickens their child to get attention for themselves. Riebling declined to comment on the new filing when reached by PEOPLE.
The judge in the case will rule on these motions at a hearing on Oct. 15.
Garnett had been transferred to Westchester Medical Center in Valhalla, New York, from Nyack Hospital in Rockland County, on Jan. 19 after his sodium levels rose to dangerously high levels, authorities say.
Two days later, Garnett was brain dead but still on life support, which prompted the hospital to alert authorities.
Over the next couple of days, Spears talked a lot about salt.
The night before Garnett died, she told authorities when Garnett was younger "his sodium levels were 200 and the doctors could not explain why," the documents state.
Authorities noted Spears "looked visibly distraught, but showed no sign of tears," according to the documents.
She also told them "she used very little salt in the preparation of the victim's food and only used Himalayan salt," the documents state.
She said she "used a pinch of salt for flavor when feeding the victim blended fruits and vegetables through his GI feeding tube." She told police it was a mixture she learned of from a friend in Florida.