FULSHEAR, Texas — A Texas sheriff’s office said Monday that its officers had been called out multiple times in the past to the home of a mother who killed her two daughters, before she was fatally shot by police.

Caitilin Espinosa, a spokeswoman for the Fort Bend County sheriff’s office, said Monday that the calls were for several different reasons. Espinosa earlier told People magazine the calls involved a ‘‘mental crisis’’ that Christy Sheats was undergoing.

A Facebook profile consistent with Sheats’ biographical details included a progun post, alongside posts about how much she loved members of her family.

Sheriff Troy Nehls said a family argument led to the shooting Friday evening in front of a home just outside the Houston suburb of Fulshear.

Nehls said the two daughters had already been shot when an officer arrived. The officer shot and killed the woman, who was apparently preparing to shoot one of the daughters again.

Law enforcement officers found the two young women — Taylor Sheats, 22, and Madison Sheats, 17 — lying in the street after having been shot.

Their 42-year-old mother was standing nearby with a gun in her hand, the authorities said.

When the mother refused to drop the weapon, an officer shot her once in the chest, Nehls said.

The city of more than 14,000 is about 30 miles west of Houston.

The sheriff’s office said that Jason Sheats, Christy Sheats’ husband and the father of the two sisters, had witnessed the killings. Taylor Sheats died at the scene, and Madison was airlifted to a hospital, where she was pronounced dead, officials said.

A friend of Christy Sheats told a local broadcaster, KTRK-TV, that she had seen no indication of any turmoil that could have made the woman snap.

Associated Press