Guess it's just an Asian thing to hate wasting food :oh Though, I had the opposite sort of experience. The first morning in Japan, I woke up to a table covered in food of all sorts (Japanese, Western...) and was told, "I didn't know what would suit your taste, so I just bought a whole lot! Please choose whichever you like :3" Obviously, 3/4 of it ended up getting wasted... D:
We had some troubles though, because I was used to just eating what I liked on my dinnerplate and leaving the rest, and I didn't understand why my host mother got so upset about food... (admittedly I was kinda fussy. XD)
I soon learnt to eat everything on my plate though, which helped prepare me for the rest of the year! :3
Damn, I thought you were talking about a 3 year old until that last line .__. That's extreme. Did her parents ever teach her manners? It's always said the Japanese have excellent manners but I guess that's a stereotype :darn
My third family was even worse- I was only there for a week though. The daughter used to scream and hit her parents, who did nothing but sit there, smile, and call her cute. She would throw a tantrum if I sat in the front seat after being picked up first and abuse both her mother and I in Japanese for hours on end. I had to share a room with her but she told me that i was only allowed in the room for sleeping. She was in her 20's!