Cindy Anthony, who appeared on the "Dr. Phil" show Tuesday, suggested that her granddaughter's death could have been caused by a series of medical problems plaguing her daughter, Casey Anthony.
Cindy and George Anthony broke their silence in an interview with Dr. Phil McGraw, who confronted the couple about particular elements regarding the contentious murder trial of their daughter, who was acquitted in July of killing their granddaughter, Caylee.
The couple discussed Casey's behavior during the time period 2-year-old Caylee went missing and the days following with Dr. Phil in the first half of a two-part interview on Sept. 13.
"I'm not making excuses for her. I want to find out what's wrong with Casey. I know that there's something wrong," said Cindy Anthony.
Cindy told McGraw grand mal seizures, a brain tumor and possible postpartum schizophrenia could potentially explain Casey's behavior.
Cindy Anthony stated that her daughter could have had a seizure the day that Caylee died recalling that Casey also had a seizure in 2007 and another in 2008 while she was home on bail.
"I don't know why she's having a seizure. Does she have a brain tumor, were the seizures caused by stress?" Cindy Anthony deliberated during the interview.
She added, "I'm not making justification for [Casey's lies], but there's a cause for that. You just don’t have a grand mal seizure.”
Court documents show that Jesse Grund (Casey's ex-fiancé) did make a 911 call reporting Casey's seizure in 2007, however doctors did not find any medical reason for it ABC News reported.
Also a source familiar with Casey Anthony’s time in jail told ABC that the 25-year-old never suffered a seizure during her three-year imprisonment.
Dr. Phil told the ladies of "The View" Monday that George and Cindy were split on Casey’s role in the death of 2-year-old Caylee. According to McGraw, Cindy Anthony was "very much" in denial.
"Looking back now, I'm almost wondering if she didn't develop post partum schizophrenia or some issue after her pregnancy, a hormonal type of illness," said Cindy.
Her husband, however, was not as sympathetic saying that Casey lied and stole money from him and his wife. According to George, she played them for fools.
"To me, in my mind, one and one adds up to two. She's responsible for Caylee. She's her daughter…" he said.
During one segment of the interview, McGraw asked the Anthonys whether they believed Casey drove around with a dead Caylee in the trunk of her white Pontiac Sunfire.
"Truthfully, to this day, I don’t know, to be honest," Cindy Anthony said.
George Anthony added, "Do I want to believe that Caylee was back there? I don’t want to believe it, but I’m going by what investigators have told me. All I know is that Caylee is not with us anymore."
"I know that," George added. "I know that."
During the trial, the prosecution had argued that Casey Anthony’s car had the smell of death, along with high levels of chloroform, and a strand of Caylee’s hair was discovered in the trunk.
The second half of Cindy and George Anthony's interview will air on "Dr. Phil" Wednesday.