Hey, hey -- there's no need for hostility over someone's sexual exploration/fantasies. The human psyche, and the sexual inclinations which stem therefrom, is/are tremendously complex. I doubt anyone can express certainty over whether or not sexuality "works a certain way" and be credible unless they're perhaps a neuroscientist who has shown that sexual feelings and associations remain consistent where all other mental states are variable. Unless you can prove that, you must take the approach of cognitive psychology and take Allison's statements as to her thoughts and feelings at face value.
P.S. The fact that she's willing to explore this issue at all, let alone in a public forum where others will offer their opinions, serves as evidence that she would not be "ashamed of being gay". She merely wants clarification, as she needs to sort out whatever cognitive dissonance she may be experiencing.