I can't put myself in your shoes, but maybe I can try to help you see it differently. I'm not going to persuade you to change your views--those are your views and you have them for a reason, though I myself do not agree. Anyhow, the Bible tells you that homosexuality/transgendered tendencies is wrong. Ok. But it does NOT tell you that you are at fault for calling them by a different name than the one they were born with. It does not tell you that you are sinning by acknowledging that they are homosexual or transgendered. If a patient named Matthew walked in and said, "Hey, call me Matt," you would call that person Matt. It isn't his name, but it's what he wants to be called. Maybe you could view it like that? If it helps YOU get through the day with a clear conscience, think of it as a nickname.