Speaking from experience, when a woman takes on a husband (who values and equates "thinness" to "prettiness") she instantly took on (back then) housekeeping, cooking, grocery shopping, laundry, ironing, dishwashing, adjustment to a sex life and a husband's wishes in that department, AND a full-time job outside the home depending on how good a provider she had. All that is enough to make a woman lose weight and keep it off real easy. - Terri wasn't skinny when she married him. In fact, he seems to have been the only one who just happened to remember stuff about Terri years later, after the fact.
That's strange I took on all that and an instant 9 yr. old stepdaughter and I gained 5 lbs, first time in my life I weighted over 97 lbs. And to top it all off, my husband worked split shifts and I cooked hot meals for him even when I had to get up in the middle of the night to do it.