Yes indeed, A woman actually acting in her own interests instead of the interests of the male members of her family is indeed a capital offense in Islam.
Pakistan Tribune:

Raheela, 22 years old, received one fatal point-blank shot in the neck when the judges returned to the court room from a break at around 11:30 am.
HYDERABAD: The courts are one place where the couples, who marry against the will of their families have felt safe in a province which is a hotbed for honour killings, have considered to be their safest refuge. However, the cold-blooded murder of Raheela Sehto on Wednesday, right in front of a bench of Sindh High Court will make to-be couples stop and think for sure.
Raheela, 22 years old, received one fatal point-blank shot in the neck when the judges had returned from a break at around 11:30 am. She was killed by a lawyer, Javed Iqbal Shaikh, whose black coat helped him manage to sneak in the weapon. He is also her brother.
“He [Javed] tried to come near Raheela many times but the police pushed him back,” said Zafar Sehto, Raheela’s brother-in-law. “But he succeeded to get to her when people stood up the judges entered the courtroom after the break.”
Zafar said that these few seconds distracted the police and Javed executed Raheela. He also tried to kill her husband, Zulfiqar Sehto, but the police grabbed him before he could take an aim.
This week’s killings come after a video emerged earlier this month (still shown above) in which the Taliban are seen executing a woman accused of adultery
Shafilea Ahmed’s parents both deny murdering their teenage daughter
Beheaded: The situation for women in Afghanistan has worsened this year, according to activists
Morsal O, a 16-year-old German-Afghan girl, was killed in May 2008 by her 24-year-old brother Ahmad Sobair O. He stabbed her twenty-three times in a parking lot in Hamburg, Germany, because of her alleged impure moral conduct. Murder of teenage or young adult women by their fathers or other close male relatives is characteristic of classic honor killings and is not a pattern in non-immigrant Western populations.
‘Murdered’: The parents of Shafilea Ahmed, pictured, are on trial for her killing
Death: A pregnant wife was smothered to death by family members who later all claimed she may have been killed by an evil spirit, a court has heard. Pictured left-right are Mohammed Mumtaz, Salma Aslam, Zia Ul-Haq and Hammad Hassan who appeared at court today
Tragic: The family home in Birmingham, pictured, where Nalia Mumtaz was found