Some quick math.  She looks to be at least 200 pounds overweight so I used 200 pounds times that by 3500 for calories in fat (yeah I know when losing its not just fat but good enough here) gives you 700,000 Kcal of stored energy in this beast.  Assuming an average TDEE over the year of 2000 Kcal (and that is only because she is 300 pounds of lard) that gives you 350 days to get back to being human.