My first thought was, "a female college sports coach, and she's worried about people knowing she's a lesbian? Everyone assumes she is a lesbian!"
But then I thought about it some more. Maybe she's a "lipstick lesbian" and very feminine on the outside, wears frilly dresses and nice make-up, and everyone thinks she's the rare non-lesbian coach. Only in reality, she is!
And if the injured student is also very feminine and girly, and the two of them have tender, groping, pink-skinned, bosom-heaving, blonde-hair-tossing, wet, gasping, lipstick smearing sex all night long, that could be quite erotic.
Excuse me. I'll be in my bunk......