This is random, I know.
Suppose your dd LOVED apples. You currently have an entire bushel of her favorite apples. She's wants to eat a massive amount of apples everyday (like 4-6 apples daily) but she's still eating her regular food as well.
Is there any reason to NOT let a kid eat that many apples? This has been going on for about 2-3 weeks. FWIW, it doesn't seem to affect her system too much other than turning her into a stinky fart girl. ;-)
Re: Would you let you dc eat...
My DS is like that with apples. Most fruit, actually. I don't tend to limit it unless he isn't eating anything else.