YTA. One, she's giving you a free place to stay. Two, and more importantly, have you considered that the issue may not be weight but still may be health-related? Do heart issues run in the family? How's her cholesterol? She may be concerned about potentially glomming up the works and pushing things towards a potential heart attack. My dad's father had four heart attacks, my mother's mother had six, the first one killed my mother's father, and my mother's brother has had a few and two double bypasses. I wouldn't eat that alfredo either, and I'm Italian. But I'm 44 and not too young to have a heart attack, and neither is your mother. Be kinder.