In 1957, 7 month old Jeaneen Marie Klokow passed away at home in Wisconsin. After her death investigators determined that she fell off the couch by accident. However, the truth was that she was killed by her mother. In Sheboygan Monday morning her mother pleaded guilty to second-degree murder.

"It's really an incredible thing," Sheboygan County District Atty. Joe DeCecco said to The Los Angeles Times  Monday.

Ruby C. Klokow is now 76-years-old and pleaded guilty after recently confessing to detectives who revived the case that she had abused the child until she died.

Following the plea, prosecutors recommended a sentence of 45 days in jail with 10 years probation.

 "We've been able to negotiate a very favorable recommendation, I think that almost goes without saying but we're hopeful to get this over with," said Kirk Obear, Klokow's attorney to fox6now.com.

The LA Times reported that second-degree murder charges don't exist any longer under the law in Wisconsin and the crime scene no longer stands and case files were missing.

The Daily Mail reported that Klokow's son came forth in 2008 and said that his mother abused him during his childhood.

An autopsy at the time found that the baby had suffered two brain hemorrhages and had three scalp bruises and a collapsed lung.

Klokow has been free since her daughters death and will remain free until her sentencing on April 15th. Kirk Obear her attorney said to The Daily Mail that the case against his client was not fair.

"There were witnesses that could have been interviewed that have long since died," he said. Another one of her children, Scott Klokow was also found dead in his crib seven years later but no charges were ever filed in his death.

However, after new investigations were in order "two pathologists who reviewed the autopsy results agreed that Klokow's claim of a 16-inch fall from a sofa could hardly have caused the girl's injuries," reported The Daily Mail.

Klokow eventually told reporters that she grabbed the baby from her stroller and threw her towards the couch. She said that the baby let out a "different kind of cry."

 "The criminal complaint detailed a long list of other abuse against the children, including allegations that she broke James's arm and nose in separate incidents, and injured his knees by kicking him with steel-toed boots on multiple occasions," reported The Daily Mail. The complain also said that she made her son Bruce stand in a corner with a paer bag over his head when he was only four or five years old while she hit his toes with a hammer.