Hi So confused. I'm still an active JW (born in) but seen so many falsehoods over the years. It all came to head for me a few months ago. I read Ray Franz's two books and everything fell into place. It was very difficult to take in but I'm taking things slowly. Don't feel you have to rush it. Learn all you can. As for your sister, you could add her to FB if you make friend lists and keep her separate and make your friend list invisible. Only mutual friends will see each other. Or you could just send her a message. I'm sure you could find a way. Cutting off family members from each other is one of the cruelest things done IMO. Keeping the congregation clean is one thing, tearing families apart is another.
www.jwfacts.com is a good website for info. www.jwstruggle.com is a good website for doubting JWs who need support. All the best. :)