Nodaway County Sheriff Darren White told CNN that his office and the prosecuting attorney had been ready to prosecute but did not move forward because the victim and her family refused to cooperate.
"The only people's stories that have been inconsistent throughout this whole thing are the Colemans' -- are the victims' in this case -- and I don't know why that is," White said.
Reacting to the lieutenant governor's call for a grand jury review, the sheriff said that his office handled the case "flawlessly."
"My initial reaction would be that apparently the lieutenant governor has chosen to simply also get involved in the hype and the social media because at no point in time has the lieutenant governor's office made any request to see any actual reports," he said Tuesday night on CNN's "Erin Burnett OutFront."
"That being said, I would welcome someone from the outside coming in and taking a look at this case because there's no doubt in my mind that everyone would be vindicated from all of these absolutely outrageous accusations," White added.
The story has been picking up steam on social media since the Star's weekend report.
A Facebook page called "Justice for Daisy" is calling for a protest at the Nodaway County courthouse next week.
Anonymous also appears to be involved. The loosely organized hacker group released a statement calling for an investigation into the handling of the case.
It made similar calls around a separate teenage rape case in Steubenville, Ohio, recently.
Two teenage boys were convicted in that case, which gained worldwide attention because of -- and through -- the use of social media.
Melinda Coleman denied that she had not cooperated with investigators. "I told them everything," she told CNN on Tuesday. "That's absolutely not true, and it still kind of shocks me that they're lying about it."
She said she was simply seeking justice and peace for her family. "I don't want to be threatened and fearful any more," she said.
Retaliation from town?
Daisy said that she was targeted by cyberbullying after she leveled the accusations and that took a toll on her. "I really did start to hate myself."
She said the fact that Barnett comes from a prominent political family -- his grandfather Rex Barnett is a former state representative -- might explain why the charges were dropped. "Yes, I do believe that it did play a role," she said.
In an interview with CNN, White described the elder Barnett as someone he had known for more than 30 years. "He's a man that I do consider to be a friend," the sheriff said. But he described as "absolutely shameful" any suggestion that Barnett would have tried to influence the investigation into his grandson.
Melinda Coleman said White had initially told her that other girls had come forward to accuse the same group of boys of similar conduct but changed his story. "He said that they were all liars. I digitally recorded him saying they were all liars and that they just wanted to crucify those poor, innocent boys.
"So my concern is what is it going to take for them to do something here? Is one of these girls going to have to die? Are they going to end up freezing in their frontyard before they will do something?"
Melinda Coleman said she would like the case to be reopened. "I would like to see some justice," she said. "And I would like the other girls to be able to come forward without fear."
On Tuesday, a spokeswoman for Missouri's attorney general said her office cannot reopen the case.
"Charging decisions in criminal cases are placed within the discretion of elected county prosecutors in Missouri. State law provides the Attorney General's Office with no authority to review or overrule a prosecutor's charging decisions," said Nanci Gonder.
In the weeks that followed her daughter's alleged assault, Melinda Coleman said her children received threats and she was fired from her job as a veterinarian at a clinic.
The Colemans have since picked up and moved from the town in northwest Missouri, about 100 miles north of Kansas City.
In April, their house in Maryville -- which had been vacant and for sale -- burned. The state fire marshal said that, "due to the unsafe nature of the structure, a detailed examination could not be conducted and this fire loss is being listed as undetermined."