At what point do I determine that she's emaciated? If she hits 80g? 75g?

Is there a behavior that will tip me off? The behavior right now is kind of distressing...

My concern is that even though in the first picture the snake clearly has something in its belly, if I'm being told it has eaten once a week without assist 1 hopper each time but the snake weighs 85g... can I even be sure it ate the meal in the picture on its own or any other meals besides that one? Can it even be that plump from the yolk?

I'll black it out, change to aspen and crumped newspaper, and leave her till Sunday and try again with a live hopper.

I'm really just looking for cues as to WHEN to resort to assist feeding - and without making assumptions about when or how many times the snake has eaten and whether or not it was by its own will. Let's throw that data out the window except for the picture where it's clear it has ingested food.