Well, I understand that you can't see things going that way with her now, but you hardly know her, right? Maybe take her on a date, see how things turn out. If you still feel that way afterwards, I'd just stay around her, as a friend, and avoid touching the subject. If she does confront you, though, just be polite and honest about it. She might be a bit sad, but life is not all sunshine and rainbows, after all.