The eldest daughter of still-missing Texas real estate agent Suzanne Clark Simpson has bluntly accused her father of killing her for trying to leave him.

“My mom was a victim of abuse from my father,” Chander Simpson, 20, wrote in a series of Instagram messages shared by the San Antonio Express-News on Wednesday, exactly a month after her 51-year-old mom was last seen during a violent fight at home.

“My father took my mother’s life in a state of rage and control,” she claimed of Brad Simpson, 53, who has been charged with domestic violence and tampering with evidence.

“My mother tried to leave my father and lost her life,” the grieving daughter alleged.

Simpson, a mom of four, vanished on Oct. 6 after she was overheard fighting with her husband at their home in Olmos Park, police have said. Her body has still not been found.

Just an hour before she went missing, Simpson complained about being physically abused by her husband, according to her own mom, Barbara Clark, who believes her daughter is dead.

Chandler accused people of turning a blind eye to domestic violence.

“In our community, this should not be happening and I will not stop speaking as the voice of my mother until she is found. I will forever represent all victims of domestic abuse and assault,” she wrote.

“THIS IS THE TIME TO SPEAK. SPEAK FOR MY MOM. SPEAK FOR YOURSELF. Your voice will be heard, my mom fought for her life, fought for her family, and herself.”

Her father, a local property tycoon, was arrested on Oct. 9 and charged with unlawful restraint and assault causing bodily injury to a family member.

Neighbors heard them fighting outside their home on Oct. 6 — with one then hearing screams from nearby woods, officials have previously said.

The husband was later also hit with additional felony charges of tampering with or fabricating physical evidence and possession of a prohibited weapon for allegedly getting his business partner to hide an AK-47 for him. He is being held on bonds totaling $3 million.

The business partner, James Valle Cotter, was also arrested last month on suspicion of evidence tampering and is being held on a $500,000 bond.

Chandler called for anyone who stands with her mother to “please be present” when her dad is in court next Wednesday.

“Stand with us in silence for my mother,” she wrote. “Justice will be served and my mom will be brought home.”

Brad and Suzanne had been married 22 years, and have three other children, ages 15, 8 and 5, the Express News noted.

“As my mother’s daughter I will tell our story over and over again,” their eldest child wrote..

“With every breath, I will make sure you remember her name. Suzanne Simpson was a victim of abuse and a victim of this community. Beyond being a victim, she was a phenomenal mother, hardworking, driven, loving and kind.”