She said that following the story about the Kosos today on "Good Morning America," the office received about 50 calls in the first two working hours of the day.
Matthew Koso's supporters say he is trying to do the right thing and is being unfairly singled out.
One in five teenagers has sex before turning 15, and about 150,000 babies are born each year to a minor parent. In Nebraska, there were 25 births to mothers under 15 in 2002, the latest year for which those statistics are available. In Kansas, five girls under 15 were married in 2003, three in 2002 and six in 2001.
In Nebraska, sex between an adult and a person younger than 16 is considered statutory rape, whether the couple is married or not.
Matthew Koso could face further charges for two to three additional relationships with girls between the ages of 12 and 14 when he was 20, according Anson.
Matthew Koso's lawyer would not allow him to comment, but Peggy Koso has said her son has dated only one other girl under 16, and they did not have sex.
"I am ready to raise this child and I know I can," Crystal said.
Falls City is a town of 4,600 about 100 miles south of Omaha. Crystal described it as a place of few opportunities.
"Here in Falls City you have two choices: go get drunk or high and die in a car accident or of an overdose, or go get pregnant," she said. "So which is the wrong choice?"
Crystal's father left when she was a baby, and her mother is on disability. She said she had to fend for herself as a child. Currently she is living with Matthew and Samara in Matthew's parents' basement, and says she wants to focus on her new family and on finishing high school. She recently started her freshman year.
"The people judging, like the attorney general, don't know me," Crystal said. "I can make these decisions. I know what I want, and if I'm willing to take the consequences, then I should be able to decide what I want."
She added that if Samara starts dating a 20-year-old when she is 12, she will "send her to her room."