The most popular veggie proteins are the Quorn Garlic n Herb Chik'n and Field Roast sausages. I do both of these on a relatively hot grill and they (apparently) work out pretty well. Big marinated portabella mushroom caps are also a go-to as well as marinated kebabs. I bought a grill pan last year and also do veggies like green beans and brussel sprouts both with just olive oil, salt and pepper. The options are tough, though, especially because she doesn't like too much smoke flavor.
