She got off easy, federal prosecutors were asking for “decades behind bars.”

(Reuters) – An American-born woman who calls herself Jihad Jane was sentenced to 10 years in prison Monday for a failed al Qaeda-linked plot to kill a Swedish artist who had depicted the head of the Muslim Prophet Mohammad on a dog.

Colleen R. LaRose, 50, who converted to Islam online and has maintained her faith, was given credit for the four years she has already served. She pleaded guilty to following orders in 2009 from alleged al Qaeda operatives.

LaRose, who could have received a life sentence, has given authorities significant help in other terrorism cases since her 2009 arrest, prosecutors said.

LaRose, who used the name Jihad Jane as she became involved in the Muslim online community, traveled to Europe in 2009 intending to participate in a militant plot to shoot artist Lars Vilks in the chest six times. But LaRose became impatient with the men who lured her to Europe and she gave up after six weeks and returned to Philadelphia, where she was arrested.

Assistant U.S. Attorney Jennifer Arbittier Williams had sought “decades behind bars” for LaRose, arguing that despite her extensive cooperation, she still was a danger to society. Prosecutors also had pointed out that LaRose – a blond, green-eyed, white American – did not fit the stereotype of a jihadist.