Question

why helmuth didn't ate the food his mother gave him

Answer 1

helmuth didn't eat the food for nine years as he wasafraid that his mother might give poison in his food

Answer 2

Hola

Here is your answer!

Helmuth heard some noises about his parents talking something about killing the whole family.. And soon his father killed himself so he decided he won't eat 9 years because he thought that his mother might poison him..