Friends, my wife has to play it safe with what she eats, which prevents us from fully (or even partially) experiencing the local cuisine, absent bagels or wine and basic food and drink like that.
Please don't look too far down on us, the unwashed masses, but how hard (or easy) is it to find American fare in Paris? Mary has no trouble with salads or most sandwiches, like turkey and swiss and things of that nature. Spaghetti and pizza (if not too spicy) are fine. No, we're not real big on clogging our arteries at McDonald's but it will do in a pinch, I guess. Nothing wrong with a burger on occasion.
FWIW, in Ireland at even out of the way restaurants we were able to find fish and chips or big salads that would suit Mary.