Eventually , Betty ( Cal 's mother ) comes and takes Cal back home .
She finally tells them that , when Lillian grew up , she had a daughter named Brenda who was dropped off at a group home , just like Cal .
Betty ( Cal 's mother ) comes and takes Cal back home .
She finally tells them that , when Lillian grew up , she had a daughter named Brenda who was dropped off at a group home , just like Cal .