Both my parents are gone. I have one grandmother left, which clearly disobeys the rules of sequential parent life expectancy. But that’s what I’ve got. And two much older sisters, who each play dual roles as sibling and parent to me. And to my benefit, they can switch roles on command, as easily as Clark Kent to Superman and back again. In my youth, I was not excited about their parental roles. It felt like having two extra moms to reprimand me for bad decisions. But I loved having sisters, “live-in friends”, to spend time with- playing games, doing art projects and listening to music that was beyond my years.…