Some excellent comments and arguments here.
Whether she personally hates gays or made her decision based on the fear of aftelife punishment, I cannot say. But here is my observation with regard to religion or politics playing a role in an individual's thinking:
it may not seem a big deal when one takes another's right to act or think according to their belief or philosophy, but when there are a number of people subscribing to the same ideology the sum of the collective thinking can become a serious hazard that surpasses merely impeding on the rights of others and can become dangerous.
During the apartheid era in South Africa segregation laws were easier to accept and enforce for the average white Afrikaner (they were the vast majority serving in government, law enforcement and career military positions) who heard from the Dutch Reformed Church (NGK) pulpit that blacks were the offspring of Noah's cursed son Ham and therefore inferior. It was generally accepted among the NGK members as a biblical requirement to separate themselves from and punish "the cursed heathens" as they were enemies of God.
It would not have been possible for Hitler to carry out genocide had the Nazi propaganda machine not first instilled in the average Nazi supporter the irrational fear and distrust of the "communist Jew". Doing so not only lent justification for "llooking the other way" but also an ingrained hatred of an "enemy within" which justified the elimination of that "enemy".
Propagating the belief that any practice or thought process contrary to religious or political teaching can cultivate an "us versus them" mentality which collectively can become dangerous. Saying it is someone's right to believe blacks, Jews or gays are bad people or engaged in bad practice is fine but remember when these individuals become a large part of society those individuals beliefs transcend their demographic and infringe on the rights of others (abortion, gay marriage etc.) and that is a problem.
Ignorance breeds fear, fear breeds ignorance and often when people fear or are ignorant about a subject it leads to zero tolerance and unfortunately, in some cases eradication.
I firmly believe we are to evolve into creatures of a higher and truly beneficial consciousness, we absolutely HAVE to question whether or not our held notions are beneficial for the existence and freedom of every creature on this planet. If you cannot exist freely then you are not living but merely existing.
Please note: these are my personal views based on my own continued life eduction and observations and should not be misconstrued as being adherent to the philosophy or ideology of a second party. Therefore like anyone I am very prone to error and always willing to scrutinize with impartiality, the opinions and arguments of others in the interests of furthering my life education.