Though Derek was lazy, leaving the majority of the chores (cleaning the house, paying bills, feeding the pets) to Chantelle, she thought he would grow out of it by the time he was 18.
Derek is currently 20 years old and still leaves pots on the stove until they burn and forgets to feed the dog.
Chantelle claims that Derek's inconsiderate behavior forces her to limit her social life so she can be home to take care of the house. "Now that he's 20, I still do majority of cooking, cleaning and bill paying," Chantelle says.
Dr. Phil suggests that Derek move out of his sister's house and experience living on his own. "You are crippling each other's lives here," Dr. Phil tells Chantelle and Derek.
"You're not being mean to him by requiring him to grow up," Dr. Phil reassures Chantelle, who feels guilty about pushing her brother out.