DES MOINES, Iowa (AP) — An Iowa teenager testified that his mother forced him and his two sisters to sleep on their bedroom floor in their own waste for months and that she refused to feed one sister in the days before she starved to death. The teen told the Polk County jury on Wednesday that his sister Natalie had become too weak to get up to eat, but their mother told Natalie she wouldn't help her, the Des Moines Register reported . "She said, 'Since you're not going to get up, I'm not going to feed you,'" he testified. Nicole Finn, 43, was charged with murder, kidnapping and child endangerment after Natalie died in October 2016 at the age of 16.