Sibling relationships don't always run deep. Having come from a roaringly disfunctional family, and being the only one who sought help, I haven't had anything to do with my sibs for years. One therapist told me as the only member to seek help, the rest may want to kill you, at least psychically. How right he was. After a few nasties, I give them all a wide birth. For a while I missed one sib with whom I had bonded in our abuse. She became the meanest of all. No thanks! I will take my family of choice (friends) over my family of chance (biological) any day.