The girls, aged 14, 15, and 16, “allegedly coordinated a plan to try and kill the mother,” according to Harris County Sheriff Ed Gonzalez.
“All three grabbed kitchen knives and chased her throughout the house and into the street, attempting to stab her,” Gonzalez said.
The mother was also allegedly struck with a brick.
“In the process, the grandmother was knocked over while trying to protect the mother,” he said.
The mother and grandmother did not suffer serious injuries following the ordeal.
The teens were arrested and charged with aggravated assault with a deadly weapon.
The three girls have been booked in the Harris County Juvenile Detention Center.
