Concerned Dad Fears Ex-Wife's Influence on Daughter

In Slate's parenting advice column, a father expresses concern over his ex-wife's weight loss and lifestyle changes, fearing they might negatively influence their daughter. The advice given is to focus on promoting a healthy relationship with food and body image at home, rather than criticizing the ex-wife's choices or appearance. The father is encouraged to support his daughter's interest in physical activities and to avoid obsessing over weight and clothing.