The first thing to note is no bacon.

Seriously though, as long as you stick with either a no dairy or no meat menu, you can use any recipe you want. Just make sure you get kosher ingredients (not hard to do). This means, by the way, if you serve meat at any time in the meal, you can't serve any dairy--even for dessert--and vice versa. The biggest problem you'll face is that you can't even use utensils and pots for both meat and dairy. So, if she's really hardcore, you will have to go buy new knives, pots, pans, cutting boards, etc. Unless you are planning to convert and go kosher, obviously this is an expensive proposition.
I didn't want to do that either, so I figured out a way around this when I entertained Jewish friends who keep kosher: Jewish "sliders." I can't claim complete credit for this, as i had a version at a deli years ago, but it's a fun meal. Go to the best deli (obviously use a Jewish deli, if possible) near you and buy corned beef, pastrami, and chopped liver. Also buy either some good rye bread or some good buns (slider size, if possible). Then make a trio of mini sandwiches. Warm the corned beef and pastrami in the microwave and serve plain on the bread/buns. Serve the chopped liver with a little romaine or leaf lettuce on the bread/bun. Remember to pick up some new plates and utensils (or use disposable) and serve with yellow mustard, chips, and good pickles. Dr. Brown's is a good choice of beverage. It's not the most elegant meal, but short of restocking your kitchen, it's the best I could come up with. And everybody liked it.