Start a conversation with her on the general subject without mentioning anything about her or what anybody has said. Tell her how you feel (about the subject not her), then ask what she thinks.
Something like, "I've read about girls being attracted to each other. It makes me wonder if I might be like that. Did you ever wonder about it?"
Remember the point of no return is when the subject changes from a general discussion to her personally. She has to make that change in the flow of the conversation, not you. If she says no or changes the subject, go no further and leave it alone.
Answered Jul 20, 2010
Edited Jul 20, 2010