Sigh. I agree with Padma. Also sometimes friends do not want to see you hurt and in their weird way try and convince you to choose a different path. I had a friend who always poked fun at me for not being girly, getting mistaken for being a guy, having a more manly then feminine body, etc. It was pretty lighthearted but obviously she saw me as more on the male spectrum than female. When I told her I planned on transitioning, it was all of sudden well "your so feminine, you don't act like a guy" etc. She even went as far as to make fun of me for possibly going bald on t and having small....parts....ya know. It really hurt our relationship. I've only been on T like a month but after she saw that the first shot or so of T didn't suddenly make me any different, she apologized. She was just scared. Scared about how this would affect our friendship but also scared of how others would treat me. As a girl, she knows how girls are....how dating might be hard for me. She was scared that I won't be allowed over to family functions anymore (I often get invited to parties they have...we are in our mid 20's but her parents are very religious). Obviously, we haven't crossed any of those paths yet...but it's just usually due to fear. Give your friend time. Maybe try to point her in the right direction educationally. Find a good website or book at maybe show her that is not all what may be seen on Jerry Springer or Maury. I know it sucks to be patient with people when you have had to be patient with them calling you she or doing other things to upset you for years, but that's all you really can do. We know there isn't anything "wrong" with us and that our lives will most likely end up OK...but people who don't feel the way we do just don't quite get it. You need to give them time.
About your therapist fears and fears about the process. I've been there...a lot of us have. You just gotta do it. Once you go to your appointment and find someone you are comfortable with, you'll be wondering why you ever were scared.