Hog Island Boa acting strange while eating

[Tsubaki]

Upcoming shed left her uninterested? Otherwise, since shes from february 2016, could easily be she's not interested in food because of 'natures call' so to speak. 4 / 5 years is when female boas reach sexual maturity. However medium sized rats sound like a small meal for a nearly 5 year old hog? I know it's an island form, but ive never had one (Especially not a female) who didn't atleast need large adult rats once fully grown. With food box, you mean a seperate box you feed her in?