My sister has braces now and can't bite into apples because if she did her braces would break.
I remember those days...
She has my sympathy. Braces suck. Remind her that once finished, she'll have to wear a retainer for a good, long time.
I got them to close the diastema in my front two teeth. After a few years, I stopped wearing the retainer, and am now back to being gap-toothed, which I don't mind any more. It's a genetic inheritance from my grandmother, and screw the notion of an "ideal" physicality.
E^D