Dear Annie:Ever since I asked my sister, "Vera," to drive me to an upcoming surgery appointment,she's been pestering me for access to my doctor so she can question him about my health and stop him from doing the surgery.I told Vera that my doctor refuses to talk to her.She doesn't believe me, but it's the truth.He can't talk to anyone about my medical status.Now she won't speak to me.I have begged her to forgive me, but haven't heard a word either by phone or e-mail.She means a lot to me.I need her in my life, and I've told her that several times.Please advise. Bereft Sister.