Best dining in Rialto, CA
Unfortunately, the area is a dining desert. The only place I know about that's worth considering is a well-regarded, cheap Mexican restaurant, the Mitla Cafe, which is not in Rialto but very close-by in San Bernardino. If anyone can add to the list, I'd also be quite interested, because I pass through Rialto often.
I don't understand why this rather run-down part of the Inland Empire lacks decent restaurants (not that the rest of the IE offers much, either). People out there love to eat -- you see long lines at various chain establishments such as Home Buffet. And Valley Blvd. is a moving minefield of hungry truckers looking for lunch or a 5 a.m. donut before heading back to the freeway. A great houndworthy hamburger, burrito, donut, or pizza joint could prosper, if properly run, and even a mid-level roadhouse or two in the style of Gulliver's in Irvine might make it as a haven for the weary traveler on the always-busy 10 or the newly extended 210 (which is now an uninterrupted bypass around Los Angeles, from the 5 just below Santa Clarita all the way to Redlands) -- not to mention the crowds attending races at the California Speedway in Fontana. If your young chef is entrepreneurial, I hope she sees potential for opening her own place in this In-land of culinary opportunity.