You operate under the (wrong) assumption that sexuality can be changed. It can't. Period. There are some people who have mutable and fluid sexuality, to a strong degree, but they are in the small minority. These individuals can appear to have their sexuality changed, but it is that they did not have the awareness of what they were or were not interested in.
Your take on this is extremely Freudian (Which isn't a good thing. It's been shown to be a very inaccurate psychological view). You're also viewing trauma as causing a negative, maladjusted individual who needs to be "fixed". Get a clue: there isn't anything wrong with their sexual orientation. We don't know what causes sexuality. As it stands it appears to be a very large variety of things that can influence it, ranging from biological to environmental. So what. If they have poor history with their family and mistreatment, then treat those problems on a psychological level, not what you assume to be a "symptom" (which it's not) of this trauma. It's not uncommon for these individuals who have misgivings and resentment to their own sexuality. Don't you think it's much more reasonable that it's because of parental and societal influence telling them that it's wrong and not ok as being the reason for not accepting themselves? It's far more healthy to learn to accept who you are, than try to change yourself into something your not.
Further, there are no "wrong" reason for being gay. You just want there to be wrong reasons so you can justify your view that it's wrong and something that needs to be fixed.
I repeat this time and time again when this "debate" comes up. What to talk about the rightness/wrongness of sexuality? Step one. Put the bible/quran/torah away. It can not be used in the discussion. Also, as far as I can tell, no one is attacking her as a person.
What a horrible, horrific, sad corrupt world that would be.