Cynthia Cashman, a 26-year-old co-defendant in a June 27 robbery at Steinhart Park, was sentenced Monday to four to five years in prison.
Prosecutors say Cashman held a knife to the side of one of three teens that were robbed.
Judge Randall Rehmeier said the couple did not criminal records, but their actions were like Bonnie and Clyde. "They sweep in and rob people," he said.
The second defendant in a June 27 robbery of three Nebraska City teens at Steinhart Park has been sentenced to prison.
District Judge Randall Rehmeier sentenced Cynthia K. Cashman, 26, of Topeka, Kan., to four to five years.
Otoe County Attorney David Partsch said Cashman and her boyfriend Samuel Mier, 25, of Topeka confronted three teens after dark at the park. He said Mier presented a handgun and demanded that they empty their pockets.
He said Cashman, who was driving the car when it was pulled over by Plattsmouth police later in the night, held a knife up to the side of one of the victim's abdomen.
He said the couple took $400 in cash and a victim's bank card was found in Cashman's possession.
After the robbery, Partsch said, the teens were ordered into Steinhart Pond.
He said one the teens, Brittany Mullins, can not swim and was put into danger by being forced into the water.
Partsch said Cashman appears to have done well while out on bond at the ReLeasT LifeHouse in Nebraska City.
He said a mental health report indicates that she may have been suffering from post-traumatic stress syndrome caused when she was the victim of a home invasion in 2010.
"She knows how the victims of such an act of violence can be impacted," Partsch said.
John Voelker, special public defender, asked the judge for a probation sentence.
He said the ReLeasT Ministry is willing to provide Cashman, who is expecting her third child in March, a residence until she is able to get into a qualified treatment facility. There were a dozen representatives of the ministry at the hearing.
Voelker said Cashman has no criminal record and said, after meeting with her, it is difficult for him to understand how she could have been involved in the crime.
He said Mier, who was earlier sentenced to four to five years, may have taken the lead role in the robbery. He said it's hard to understand why Cashman did not resist Mier's actions and why she did not come to the aid of the victims.
"Whatever happened this night, it certainly isn't something that has happened before. It is something that is out of character for her," he said.
He said the post-traumatic stress syndrome may have been a factor.
"I don't know if that's something she should have dealt with earlier, but it may have manifested itself in this instance," he said.
Judge Rehmeier noted that Cashman was earlier charged with 12 felonies and made a plea to a single count of robbery in an agreement with prosecutors.
"Miss Cashman was involved, she was not just present," the judge said.
He said alcohol may have been a catalyst for Cashman's actions and described the Kansas couple's appearance in Nebraska City like a modern day Bonnie and Clyde.
"They sweep in and rob people," he said.
Cashman was given credit for 93 days served. She will be eligible for parole in two years and for mandatory release in 2.5 years.