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Barker, 29, was sentenced on Monday,CBS affiliate WLOXand theBiloxi Sun Heraldreported. She pleaded guilty to culpable negligence manslaughter earlier this month.
The former Long Beach officeraccepted the plea agreement to a lesser chargeafter initially being indicted for second-degree murder, theBiloxi Sun Heraldreported.
At her sentencing hearing, Barker broke down while offering up an apology to her dead daughter, Cheyenne Hyer.
“I want to say that the only person I owe an apology to was my daughter because no one else was in her life but me,” Barker said, theBiloxi Sun Heraldreported.
Barker also took aim at Cheyenne’s father Ryan Hyer, who has publiclyexpressed his devastationover his daughter’s tragic death.
“The last time I spoke to him was in July (2016),” Barker said, theSun Heraldreported. “He doesn’t even know what her favorite toys are.”
The child died on Sept. 30, 2016, after Barkerwent to the home of her supervisor, Clark Ladner,to talk to him at the end of her shift and ended up having sex with him, WLOX reported.
She left the car running with the air conditioner on to combat the 100-degree temperature, but the vent wasn’t blowing cold air,CBS News reported.
Cassie Barker outside court on Oct. 6, 2016.Amanda McCoy/The Sun Herald via AP

She fell asleep in Ladner’s home and left her daughter strapped in her car seat for four hours in the sweltering heat.
“I don’t know what I could ever do to you that could be worse than what you’ve already experienced,” Harrison County Circuit Judge Larry Bourgeois told her in court, WLOX reported. “You will forever be entombed in a prison of your own mind.”
Barker and Ladner were fired after the child’s death, theSun Heraldreported.
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Cheyenne’s father says he still cannot believe his daughter is dead.
“As a parent, you are supposed to protect your child, and Cheyenne is gone because her mother didn’t protect her, not once but twice,” Hyer said. “May God have mercy on her soul.”
Hyer also spoke about his daughter following Barker’s sentencing.
“When it was time to view her fragile body, I kept telling myself to be strong,” Hyer said, theSun Heraldreported.
Cassie Barker.Hancock Co. Sheriff

“However, I broke when I saw my beautiful, sweet, funny and innocent angel laying in that casket. I just wanted to pick her up and hold her and hold her and tell her, ‘Everything was going to be OK, Daddy has you.'”
“I have blamed myself for every what if, should have and could have. My life has been a complete hell without Cheyenne. This will never get easier.”
Prior to her sentencing, it was revealed that Barker isexpecting a second child, theSun Heraldfirst reported exclusively.
“We were told there are a million people who havebabies while they are in prison,” he told theSun Herald. “The way it works is once you are medically cleared you go back to whatever prison you are supposed to go back to.”
While Barker “has accepted responsibility” for her daughter’s death, Holcomb tells PEOPLE, “she hasn’t been the same since this happened. It’s a very sad case. Her life will never be the same again.”
If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453, or go towww.childhelp.org. All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages.
source: people.com