There are places online (probably local too) where she can get the wheat in small quantities from small growers and she can grind it herself. If she goes this route, she can sprout the grain, then dry it under low heat in oven or dehydrator and grind it into flour herself. There are bread companies here in the US that sprout their grain first and claim it helps those with wheat sensitivities (if not full blown celiacs).
Barring that, I know that King Arthur flour is unbromated, cause it is what I buy. I don't know about Bob's Red Mill flour, but you could look 'em up and call and ask.