UPDATE: The butterfly bars from Nashbar are excellent. Shifted the cockpit back by 6 or 7 cm, which gives her a more upright "Position 1" and makes the far-forward "Position 3" more accessible and useful.
Thanks for the suggestions, especially to Golden Boy for looking at the bars instead of the stem. This was a major victory for my wife's commuting comfort.
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera