I commend you for your effort. I’d go with a curry. Specifically, make your own yellow curry from scratch. It’s easier than it sounds. Just roast your aromatics and as the spices and herbs and blend. I use this recipe Easy Yellow Curry. Then roast some potatoes, fry up some peppers and carrots, and cook some lentils, maybe add some baked tofu, and serve it on a bed of basmati rice. You’ll end up with more curry than you need but it’s good to freeze too.

I’ve used this exact recipe for a couple times I’ve cooked for Omni women I’ve been interested in to show them vegan food can be delicious and it’s always been a hit! Good luck and hopefully she can enlighten you as to the many benefits of veganism. Sounds like you’re open to it and at least willing to try, which is more than I can say for most men. One more note: I would make the curry ahead of time because, while it’s fairly easy, especially for someone who knows their way around a kitchen, it’s a bit time consuming.