Please Convince My Daughter She Has an Eating Disorder

Eighteen-year-old Maddie says she doesn't have an eating disorder even though her mother, Melissa, stepfather, Greg, and grandmother, Linda, claim Maddie is slowly starving herself to death. Standing tall at 5'10, Maddie says if it wasn't for her family, she would weigh less than 100 pounds. Her mother says Maddie has been in and out of the hospital every other month for dehydration, can't get up a flight of steps without being out of breath, passes out in the shower, sleeps all day, and even quit school. But Maddie says everyone needs to calm down because she's in control. Does Dr. Phil think Maddie is in control or in need of help?