My brother's gf is a vegetarian. We're having everyone over next weekend for a get together. My family eats a lot of meat and I feel a bit unsure of what to cook her, and if I'm being honest I don't see why we should change our catering for one person.
I asked my brother to bring along some of their own food for her (he eats meat so will be fine, it's literally only for her) and he seemed annoyed at me. He obliged but I could tell he wasn't happy. When we've been to theirs she doesn't cook meat for us so it feels one sided. She jokes she'd probably poison us as she doesn't know how to cook meat but realistically she doesn't want to cook it, so why should we for her?