According to the best practice of care for gender dysphoria to limit the dangers to the person, she is a woman. Not a man and certainly not an it.

If you choose not to partake in helping a person with such a condition get on with their life in a way that doesn't affect you or other people, off with you but you're a garbage person for putting your own prejudice ahead of another person's mental health and you deserve nothing but scorn.

If there were better treatment available that didn't involve such drastic life-altering measures and kept the patient safe and happy, that would be the treatment of choice. At this time, this is the method of treatment judged to be most beneficial to the patient according to the evidence we have.