“Well, it seems to me that the best relationships - the ones that last - are frequently the ones that are rooted in friendship. You know, one day you look at the person and you see something more than you did the night before. Like a switch has been flicked somewhere. And the person who was just a friend is ... suddenly the only person you can ever imagine yourself with.” ~ Gillian Anderson

Especially if that friendship starts off in the form or 'Sisterhood'

Emma Sage has not wanted to leave Greta's side since she dropped her big sister Katrina off to college. I think she is afraid Greta is going to go away too.........