She's cute and all that but you really need to put a stop the the food craving or your gonna end up with alot of fights in very near future.A good dog behaviourist should be able to teach you how to deal with the situation rather than making gaurds to stop her getting his as this then causes more frustration and anger which then leads to aggression.Imagine what she's gonna be like fully grown m8 if she showing signs of anger already over food!!

Pic of my 2.Male German Shephard and female Alaskan Malamute





She was the same with food but sorted that after about 4 days pmsl.Only had 3 small fights since over trivial things