The repeatable 50-55% concordance of homosexual attraction between identical twins and roughly 20-25% with fraternal twins in twin studies indicates a mixed genetic-environmental basis for homosexuality, not either one purely. The inclination is almost certainly beyond overt control.
Well, Dr Phil ought to know.
Hey, Dr. Phil? Do yourself a favor and look up the following terms: "Lezbutante", "Hasbian", "Lesbian Until Graduation". Now, if the phenomenon is common enough so that the gay community actually has multiple terms for "someone who was a lesbian for a while (especially during college) then went back to heterosexuality", then it's a pretty good bet that the phenomena actually does exist. So to reject the father's observation outright, as you did, is really bad psychological advice. Especially when he probably has more insight into his daughter's behavior than you, or the person on your staff who reads your mail, does. After all, you've spent, what, zero seconds in consulation with her?
Yeah, if you play the odds, there are many more actual lesbians out there than there are temporary ones. But to say what that daughter's sexual orientation is sight unseen is pretty dumb.
And embryonic stem cell research holds great promise for a cure of this inherited malady.
Well, not really. But I have just proven that I have studied the subject as well as Michael J. Fox has studied the candidates that he is currently campaigning for across the nation.