what is gender therapy for exactly?

[Everyone]

and why do people need it?

I'm not trying to be offensive, so I apologize if I am.

[cynthialee]

A good gender therapist can help a gender questioning person by asking the right questions at the right time.
Even if you do not need therapy you need to establish that you are sane and informed enough to start transition.
Also a good gender therapist can help you find other resourses that you will need to transition properly.