My sister wasn't even DF'd, but she was living with her "wordly" boyfriend so I stopped associating with her. I didn't even go to her wedding, something I will always regret. I wasn't even a great JW, but I felt like I needed to shun her to help her come back. My husband told me I couldn't go to her wedding, and I foolishly listened, trying to be a good JW wife.
Anytime my sister would go to the Memorial or Convention, I had hope she would come back for good. I tried to speak positively about the "truth" so she would come back, even though I was very unhappy being a witness. Eventually, I got tired of ignoring her, as she was one of my best friends, and I started talking with her again. She showed me unconditional love, and seemed so happy with her non-JW life that I finally researched the history of the organization and left the religion too. She could have been mad at me, but she understood that I was doing what I thought was best at the time. Fortunately we are still great friends.
I'm sure your family really does love you, they are told to shun you out of love, so the blame of you not returning to the religion isn't on them. There was a horrible talk last DC about how the most loving thing a family can do is to shun their relative to win them back. If they talk to them, they could hinder them coming back...which would hinder them from getting everlasting life. It was sad to see a mother in my hall crying her eyes out listening to that garbage, because her unbaptized son had stopped going to meetings.