That snakes look too big to on fuzzy rats, (or I just forgot how big fuzzy rats are) I think the woman is right to have him on small rats.
however the rats should be pre - killed or frozen thawed and I dont think that snake needs two rats per feeding but thats just me.
Also if the snake is getting two rats than the woman is still right because the buldge is from two food items not from one item so its not really over feeding.
I think over feeding is too many food items per feeding (compared to the snakes size) or feeding ONE food item that ends up looking like two food items when the snake has swallowed it and its in the body poking out.
I have two boas one regular and one brazilian they are still babies so I give them two mice and once they get bigger and big enough for rats it will be one small rat and so on...For now I give them multiple food items per feeding (one at time) because they are small and need more than a juvenile or adult might.
I apologize; i didnt see this second set of pictures, in the top picture the snake looks as twice as big as it REALLY is in the bottom pictures..
So you are right it SHOULDNT be on small rats it should be on fuzzie rats just as you said or adult mice. Again I apologize