The suburban Philadelphia woman, Colleen R. LaRose, was , and pledging to murder the artist, marry a terrorism suspect so he could move to Europe and martyr herself if necessary.
Her boyfriend of five years said LaRose had never hinted at Muslim leanings or attended religious services of any kind. Kurt Gorman, 47, of Pennsburg, said that he met LaRose in Texas and that nothing seemed amiss until she moved out of their apartment without warning in August.
"I came home and she was gone. It doesn't make any sense," he said Wednesday outside his small business in nearby Quakertown. "She was a good-hearted person."
The indictment paints a picture of a woman whose devotion to the cause grew as she prowled the Internet and conversed with a loose band of terrorist suspects in Europe and South Asia. She eventually agreed to try killing Swedish artist Lars Vilks, who had angered Muslims by depicting the Prophet Muhammad with the body of a dog, according to a U.S. official who wasn't authorized to discuss details of the investigation and spoke on condition of anonymity.
LaRose is "one of only a few such cases nationwide in which females have been charged with terrorism violations," said U.S. Department of Justice spokesman Dean Boyd.
LaRose, 46, of Pennsburg but with close ties to south Texas, has been held without bail since her Oct. 15 arrest in Philadelphia.
Separately Wednesday, a spokesman for the Pennsburg police chief said that LaRose attempted suicide in 2005 with an overdose of pills, but later said that she didn't want to die, CBS News has learned.
Authorities said the case shows how terrorist groups are looking to recruit Americans to carry out their goals.
"Today's indictment, which alleges that a woman from suburban America agreed to carry out murder overseas and to provide material support to terrorists, underscores the evolving nature of the threat we face," said David Kris, assistant attorney general for national security.
LaRose had targeted Vilks and had online discussions about her plans with at least one of several suspects apprehended over that plot Tuesday in Ireland, according to the U.S. official.
Vilks said Tuesday that he has no regrets about his images - some of which depicted the Prophet Muhammad with the body of a dog - and that he .
Vilks, who has faced numerous death threats over the controversial cartoon, said he has built his own defense system, including a "homemade" safe room and a barbed-wire sculpture that could electrocute potential intruders. He said he also has an ax "to chop down" anyone trying to climb through the windows of his home in southern Sweden.
"If something happens, I know exactly what to do," Vilks told The Associated Press in an interview in Stockholm.
Irish police said Wednesday those arrested were two Algerians, two Libyans, a Palestinian, a Croatian and an American woman married to one of the Algerian suspects. They were not identified by name.
A U.S. Department of Justice spokesman wouldn't confirm the case is related to Vilks. At least three Swedish newspapers published the Muhammad cartoon Wednesday, arguing that it had news value or was a free-speech symbol.
The indictment charges that LaRose, who also used the name Fatima LaRose online, agreed to try killing the target on orders from the unnamed terrorists she met online, and traveled to Europe in August to do so.
LaRose indicated in her online conversations that she thought her blond hair and blue eyes would help her move freely in Sweden to carry out the attack, the indictment said.
LaRose as a convert to Islam who actively recruited others, including at least one unidentified American, and her online messages expressed her willingness to become a martyr and her impatience to take action, according to the indictment and the U.S. official.
Killing the target would be her goal "till I achieve it or die trying," she wrote a south Asian suspect in March 2009, according to the indictment. Her federal public defender, Mark T. Wilson, declined to comment Tuesday.
"I'm glad she didn't kill me," Vilks told The Associated Press on Wednesday, saying the suspects appeared to be "low-tech." He said he has built defense systems in his home to thwart would-be terrorists, including a safe room and electrified barbed wire.
U.S. Attorney Michael Levy said the indictment doesn't link LaRose to any organized terror groups.
In recent years, the only other women charged in the U.S. with terror violations were lawyer Lynne Stewart, convicted of helping imprisoned blind Sheik Omar Abdel Rahman communicate with his followers, and Aafia Siddiqui, a Pakistani scientist found guilty of shooting at U.S. personnel in Afghanistan while yelling, "Death to Americans!"
But neither case involved the kind of plotting attributed to LaRose - a woman charged with trying to foment a terror conspiracy to kill someone overseas.
Stewart has insisted she is "not a traitor," while Siddiqui has accused U.S. authorities of lying about her.
LaRose called herself JihadJane in a YouTube video in which she said she was "desperate to do something somehow to help" ease the suffering of Muslims, the indictment said. According to the 11-page document, she agreed to obtain residency in a European country and marry one of the terrorists to enable him to live there.
She moved to Europe in August with Gorman's stolen passport and intended to give it to one of her "brothers," the indictment said. She hoped to "live and train with jihadists and to find and kill" the targeted artist, it said.
LaRose also agreed to provide financial help to her coconspirators in Asia and Europe, the indictment charged.
LaRose had an initial court appearance on Oct. 16 but didn't enter a plea. No further court dates have been set.