“Sisters, as you know, also have a unique relationship. This is the person who has known you your entire life, who should love you and stand by you no matter what, and yet it’s your sister who knows exactly where to drive the knife to hurt you the most.” Lisa See, author When I was younger, I was all about trying to fix what was wrong in my life. Smoothing out the rough edges. If I couldn’t fix my flaws, I’d figure out a way to hide ’em. As I’ve aged, I’ve accepted the messiness of life. Sometimes we fall, Humpty-Dumpty-style, and break, and the pieces don’t fit back together again. As an author, I love to delve into complicated relationships. Family relationships. Friendships. Does he-doesn’t she romantic entanglements. You want to try to unravel some problematic relationships? Try to understand the bonds between sisters. Some sisters are each other’s designated best friends, with their phone numbers on speed dial so they chat with each other multiple times a day. Some sisters are so hostile toward one another that they haven’t seen or spoken to one another in years. And some sisters are an oil and water mix of the…