Knight described her relationship with Berry as "ok," but noted the two are "not best of friends."
"Amanda was one of those girls that really didn't get it," Knight told the psychologist host, Phil McGraw, in the second of two taped interviews Wednesday.
She went on to say that Castro treated Berry "totally different" and this may have caused Berry to look at "the situation in a different way."
Knight explained that she delivered Berry's baby in Castro's home in 2006. She said that she was told by Castro that if the baby died, he would kill her.
Knight said that the baby was born blue and that she had to give the baby CPR so that it started breathing.
While Berry was allowed to give birth to a baby that she and Castro conceived, Knight said she became pregnant five times while inside the house and each time, Castro caused her to have a miscarriage.
One time, she said, Castro jumped right on her stomach "with his feet and heavy body" in an effort to terminate her pregnancy.
Knight said she was starved and repeatedly punched in the stomach. She said Gina DeJesus, the third woman kidnapped and held captive in Castro's home, helped her get through the miscarriages and cope in times of pain.
She recalled a time when she was forced by Castro to eat a sandwich with mustard on it, which she is allergic to.
"My throat and my body swelled up. I couldn't breathe. I couldn't talk," she recounted.
Knight said DeJesus got her through it and didn't let her die.
Knight said she doesn't understand why Amanda was allowed to have a baby and she wasn't.
"I was a girl that couldn't be broken, a girl that couldn't be underestimated," she told Dr. Phil. "When he found out he couldn't control me very much, he didn't want to give me a kid."
"I think he liked her more," Knight said of Berry. "Cause he had an obsession with blondes. He would always say, 'I don't want to make her cry, I don't want to make her upset or I don't want to hear her whiny mouth. He would try to make her happy instead of sad."
Knight said she felt like she was the most hated woman in the house and that Castro would frequently remind her that she didn't have a family that loved her and was looking for her.
"That's the reason why I hate you," Knight said Castro told her. "Because I can abuse you and nobody would care. No one."
"...And it would hurt because I knew my family didn't care and I knew my family wasn't there for me, cause they never was," Knight went on to say in the televised interview.
Police did show up at Castro's home once, according to Knight. But, she says, they left after no one answered the door.
Maureen Harper, a spokesperson for the Mayor of Cleveland, told Crimesider that police responded to Castro's home twice: once after police received a call from Castro reporting a fight in the street, and again in relation to an investigation regarding Castro and his duties as a bus driver. Police investigated the possibility that Castro had left a child unattended on a school bus and visited the house, but there was no response at the door.
There have been previous reports that a neighbor called police after seeing naked women on dog leashes, crawling in the backyard of Castro's home. Knight called that statement false in the interview with Dr. Phil. She said that Castro let her and the other two girls out in the backyard at times, but that the scenario described by the neighbor did not take place.
When the interview turned to the day Knight, Berry and DeJesus escaped from Castro's home, Knight expressed sadness and shook her head as the television host played a recording of Berry's 911 call.
Knight, Berry and DeJesus escaped from Castro's house on May 6, 2013 when Berry pushed out a door and called for help. She ran across the street to a neighbor's house where she made called 911.
"She didn't mention us," Knight said of the 911 call, which she called "sad."
"Maybe she was angry about everything... life...," Knight said in an attempt to justify Berry's lack of mention. "She just took a different road than everyone else."
Luckily, when police responded to Castro's home, they rescued Knight and DeJesus as well as Berry and her daughter.
Knight described the rescue as being like "a roller-coaster" and recounted how she wouldn't let go of the police officer.
"The first thing I said is, 'We're going home!,'" she said.
Knight was kidnapped in August 2002, when she was 20-years-old, reports the Associated Press. She has been the most public of the kidnap victims since then and even made a visit to Castro's neighborhood before his home was demolished.
Castro, 53, pleaded guilty and was sentenced to life in prison.
A month into his sentence, Castro was found dead in his cell. His hanging death was ruled a suicide, but a prison report indicated he may have died accidentally while choking himself for a possible sexual thrill, according to the Associated Press.
"He took a cowards way out," Knight said of Castro's suicide.
She said she would have preferred he have spent the rest of his life in prison
"The pain he put us through is pain he didn't want to go through," she said.
