I was disfellowshipped 5 1/2 years ago. All but one of my JW "friends" stopped talking to me. The one who would still talk to me and get together with me was a family member on my soon to be x husband's side. Even then, we don't talk very often. She and her daughter are on my facebook, but I privately message them if I have something to say about their post, because I don't want them to get into trouble from family and from the org for still having anything to do with me. I know that my friendship with her will never be what it was, but I can live with that. We don't talk about religion, with the exception of when I tell her she just needs to come over to the dark side with me and get disfellowshipped!! LOL I know that she has a LOT of issues with how those in the congregation act, she sees the hypocrisy, but she still believes in the core beliefs and is unwilling to look into the false teachings that she holds as truth.
It makes me very sad for her because she has no friends in the "truth". Her only friends were myself and my x-SIL and we are both disfellowshipped. When her youngest daughter (who is active and married another JW) got married a few months ago, very few attended the bridal shower or her wedding and it broke her heart. If my x-SIL and myself were still in, we would have done all of the planning and helped with both the shower and the wedding.
I don't know what to tell you to do to keep your last JW friendship. Maybe hanging by a thread, as I am with my friend, is the only way you will be able to keep them. I'm ok with it...for the most part. I would be heartbroken if what we have left would come to an end. SO I take what I can get from her and hope that one day she will see the org for what it is and leave. Until then...it is what it is and I'm ok with it.