KEEP FEEDBACK VAGUE IF ASKED ABOUT RELATIVE’S BOOK DEAR MISS MANNERS: A family member has self-published a memoir of their life as an ebook. Although we are not close and live in different cities, we do enjoy chatting and catching up by phone from time to time. I decided to purchase a copy, as I was curious about their perspective on various family events over the years, but found the book to be poorly written and generally uninteresting. Do I mention it when next we speak? If asked directly, is it acceptable to offer vague pleasantries or a fib? I have no wish to be unkind, as taking the trou…