Scalar adjectives

Here's a little fill-in-the-blank for you. In the film Veer-Zaara, Chaudhary Sumer Singh's wife is scolding him for playing hockey with the village children. She says:

If you want to die, then lie down on a bed and die. Don't play with kids (____) enough to be your grandchildren and get your bones broken.

I'm quite certain that in this context any American would say "young enough".

She says "old enough".

And it's very strange-sounding.