Published: Sep 24, 2012 11:36 AM EDT

APALACHICOLA, Fla. (AP) - A tentative plea agreement that would spare a German grandmother from a potential death sentence is going before a Florida judge.
    
Seventy-three year old Marianne Bordt is charged with first-degree murder and aggravated child abuse. She allegedly drowned her 5-year-old grandson, Camden Hiers of suburban Atlanta, in the bathtub of a beach house in January 2010.
    
Circuit Judge Angela Dempsey is considering the proposal for a reduction in charges and 21.5 year prison term at a hearing Monday in Apalachicola.
    
Camden died while Bordt and her husband were vacationing with their grandson on St. George Island in the Florida Panhandle.
    
Her lawyers were preparing an insanity defense for an October trial. It includes a claim she suffered mental problems in part due to a World War II Soviet bombing raid.

(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)