(CNN) -- A woman convicted of sexually abusing her 2-year-old daughter and streaming the acts over the Internet to a teenager in the United Kingdom was sentenced to 20 years in prison.

Thirty-three year-old Julie Carr was also convicted of producing child pornography and gross sexual assault and exploitation of a minor.

"When I see child-pornography, I ask myself: Where are the parents? Where are the people who are supposed to be protecting the child?," U.S. District Court Judge John Woodcock said, according to the court transcript. "Well, Ms. Carr, in your case, we know where the mother was."

The acts took place in June 2009 when Carr used a webcam to deliver four live videos of herself performing oral sex on her youngest daughter, according to the documents.

The videos were sent to Nicholas Wilde, then 19, in West Midlands, England, after meeting on an internet dating site.

They exchanged messages for approximately 10 hours over the month in which the crime occurred, accoridng to the documents.

The videos were later discovered by British police after searching Wilde's home in relation to a separate child-pornography case.

Police collaborated with American authorities to then identify and locate Carr, the documents said.

Wilde was sentenced last year in England to nearly five years in prison for possessing child-pornography and inciting the sexual abuse of a child, according to West-Midlands police spokeswoman Hazel Steer.

Wilde, who claimed to suffer from Asperger's syndrome -- a form of autism -- was ordered to sign the sexual offenders register and is banned from working with children for life.

Meanwhile, Carr's four children have been removed from her custody, according to Assistant U.S. AttorneyTodd Lowell.

"I want to say that I am sorry," she told the court. "I never meant to hurt anyone in my family, and I have regreted it ever since."

Once released, Carr will receive a mandatory 10 years of supervision where along with checks for drugs and alcohol, her computer and internet use will be monitored, the documents said. She will also be registered as a sex offender.

"I have always thought that possession is bad enough, but production is another level of true evil," Woodcock said.

"Unequivocally, yours is the worst case I've ever seen."