Christian converts like her are often executed in Iran.
The Taliban is also in Texas. It's everywhere that Islam goes.
The father, a strict Muslim, was furious when his Jordanian-American daughter married a man without his permission.
Ali Mahwood-Awad Irsan blamed his daughter's husband, relatives say. They say he also faulted one of her closest friends, 30-year-old Gelareh Bagherzadeh, a Christian convert who widely denounced Islam.
First Bagherzadeh was killed, gunned down outside her parents' Galleria townhouse complex in January 2012. Eleven months later, Irsan's son-in-law died after being shot multiple times in the northwest Harris County apartment he shared with his wife.
Bagherzadeh had moved from Tehran just four years before, and had spoken out publicly against the Iranian regime. Christian converts like her are often executed in Iran.
Unfortunately a Muslim freelance executioner found her in this country as well.
Bagherzadeh had moved to Houston to join her parents in 2007, turning her back on life for women under Iran's oppressive Islamic regime.
Friends have said she told them she was once arrested for not wearing the correct dress, and had been strictly disciplined for dating a man who was considered inappropriate.
She told them she was so sick of Islam that she converted to Christianity and was baptized at Second Baptist Church.
On Jan. 15, 2012, she was driving from the Beavers' home in Spring when she was shot while turning into her parents' town home complex in the 800 block of Augusta. She was chatting with a friend on the phone, who told police he heard her scream before her car crashed into a garage.
This wasn't the first time her killer had done this sort of thing. He had gotten away with it once.
It wasn't the first time one of his children had defied Ali Isran, relatives say. He was furious, they say, when another daughter, Nasemah, married a Houston man of whom he disapproved.
In September 1999, Ali Irsan killed 29-year-old Amjad Alidam with a 12-gauge shotgun in the Tower Glen community in east Montgomery County. He claimed his son-in-law was abusing his daughter and had threatened him and his family.
The Montgomery County District Attorney's office did not charge Irsan because it appeared the shooting was in self-defense, according to newspaper archives.
And the story followed the same pattern.
Cory Beavers first met Nesreen Irsan at Lone Star Community College. She was shy and naive, he said, and largely prevented from going out. He introduced her to Coty, who'd had a string of failed relationships.
"They just both fell for each other," Cory Beavers said. "They were head over heels in love to the point that it was pretty nauseating to be around them."
Nesreen transferred to The University of Texas M.D. Anderson Cancer Center, where she studied molecular genetics. She befriended Bagherzadeh, a classmate, and introduced her to Cory Beavers. Soon those two also were dating.
But in the Spring home Nesreen shared with her husband, life was stressful. They moved in together after marrying in the summer of 2011 in a civil ceremony so as not to attract attention. She was afraid of her father, Beavers said.
The father, meanwhile, was canvassing the couple's neighborhood, handing out pictures of Coty Beavers and claiming he was trying to find his daughter, Cory Beavers said.
Even after they obtained a protective order against him, the elder Irsan would show up unannounced or call in the middle of the night, Beavers said.
"He had a very fundamentalist interpretation of Islam and believed that (Irsan) was supposed to marry a guy that he chooses," he said.
And despite all that, it took two years for him to finally be charged in one out of three murders.
Cory Beavers said he's relieved that Ali Irsan is in custody, having feared for his safety as well. Still, Beavers said, both his brother and his girlfriend are dead.
This isn't the first time this happened. And it won't be the last. This is only a small part of the Islamic impact on America.
It's not just planes crashing into skyscrapers. It's also a woman being murdered in the name of Islam.