I'm not sure of the sincerity of this question. I'm in the LGBTQ+S community, S being straight. My brother is G, gay, and would identify himself as such, as I would assume an L or B or T and maybe Q would too. Seems like a troll to me. However, pay for her ticket and you've done enough. But if you don't know her persuasion, you need to be forthright or there will be an unhappy ending.