I've often wondered about the complications involved with egg and sperm donors. None of them should be anonymous and should be fully traceable. Who knows. ... You could be inadvertently seeing your bio sibling and be none the wiser. Get married, have children. All great until blood tests are needed for something and BOOM. You discover you're married etc to your sibling/cousin/relativeI hope the egg donation wasn't anonymous and that Blake is able to trace her bio origin when she is older if she wishes.