Brunchausen Syndrome
Brunchausen syndrome (factitious disorder imposed on others) is when someone tries to ensure attention and sympathy from loved ones by helping them gain weight, thinking their obese appearance will not draw affectionate attention from others. Inducing weight gain by constant feeding via buffet or brunch.
Suffering from Brunchausen Syndrome, she takes him to brunch daily, hoping the buffet will fatten him; he cannot possibly leave her in such a poor condition.