Brenda's brief bout of madness dissipated after Luke slapped her, and she deflated like a rubber doll. In the end, it was her mother who pulled her back.
Asel was obviously much more clear-headed and wiser than her daughter.
She had seen the men whom Luke had tortured. Their feet had been crushed, and whoever woke up couldn't stop screaming in pain.
It was their screams that had attracted the terrible monsters. In the end, the screaming guys had been killed, and she had been abducted from the car and taken to the underground cave.
She also learned from her son who had just woken up that it was Luke who saved him.
Her daughter had humiliated herself. Luke had saved her and her son.
Who knew if she and Brenda could have escaped from the cave alive without Luke's help.
It was clearly also Luke who had called in the FBI agents. Only a self-centered girl like Brenda would've ignored that.
