Goslee has said authorities didn't have any evidence of a crime in the earlier deaths and no one could have predicted Pilkington would kill her remaining son.
Her mother, Lori Cummins, said Pilkington told her in a brief jailhouse phone call last week that she's innocent.But police and prosecutors say Pilkington confessed Aug. 18, the day her third son, 3-month-old Noah, was found dead.
During a hearing, a doctor speculated that the boys might have had a genetic defect. But the doctor also said there were signs of neglect.
A judge allowed Noah to be returned home because there wasn't conclusive evidence the first two boys had been killed. The judge, Dan Bratka, said he couldn't comment about the Pilkingtons because the family's child services case is pending in his court but the Authorities now believe Pilkington used each boy's comfort blanket to suffocate him in his crib or bed because she wanted her husband to pay more attention to her and their 3-year-old daughter..
Goslee said Pilkington was dominated and isolated by her 43-year-old husband, Joseph Pilkington, who had been Cummins' live-in boyfriend before marrying Brittany Pilkington in 2010. He isn't a suspect in the case. Relatives say he hasn't been seen since his wife's arrest. He hasn't returned messages from The Associated Press.
Police and prosecutors have noted that Brittany Pilkington did not seem affected or emotional about her sons' deaths.
Cummins said that her daughter was always good with the children and that Joseph Pilkington favored the 4-year-old son over the 3-year-old daughter. This bothered Brittany Pilkington, who said the children should be treated equally, Cummins said.
The county prosecutor has alleged Brittany Pilkington was physically abused as a child by her father. Her father, Ed Cummins, said he wasn't present when she grew up and he regrets it. But Cummins, 41, said he never harmed her.