I've been living full time for almost 2 years and I've been out to my family for almost 3. Most of my extended family simply doesn't associate with me anymore and things are always tense with the ones that do. My therapist had a good explanation for why this type of thing happens.. She said that people see you as a continuum; those that have known you all your life will never be able to "forget" your male identity and tend to treat you accordingly. To a cisgender, heteronormative person, you might as well tell them that you've always felt like a frog and now you want to be treated as a frog.... They just don't get it.
I found that the best way to deal with it is by reaching out to the friends and family that DO understand and want to help. We all need someone to share our accomplishments with during transition; you probably know who those people are already. Work on strengthening your relationship with them and be candid about how you're feeling. I have a best g-girlfriend who I can always count on. A Trans support group is absolutely essential! Even if you have to travel to get there, believe me when I tell you that it's worth your time. There's nothing that matches sitting with a roomful of people just like you.
I know exactly how you feel.... If I didn't have children, I would seriously consider moving away and never seeing most of my family again.

I didn't feel so strongly about it when I began but, over 6 years of transition, I've developed a apathetic attitude with my family. It is important to remember that this is a transition for everyone around you and you do have to give them lots of time to get used to seeing you differently...it takes years. There's a difference, however, between the ones that try and the ones that won't. The ones that won't understand probably never will so........ screw'em :-) They're not worth your time.