I have the same problem. Tell her to try Gap Original Fit jeans--they come in boot leg or flare hems, three different lengths, and you can usually find them for around $30 in the store because they're not the low-rise that everyone else wants (they're less at the outlet). There are different fabric combos with different levels of stretchiness, so it's good to check the tags and try a couple of different styles/fabrics, because some of the less-stretchy are looser in the thigh than the real stretchy ones. And they fit women who have waists and hips!
I read your response to the other person and appreciate the tip too. I'm going to check out Gap's original fit jeans.