I too am very curious about what particular literature you are studying. My mother read to us every night, frequently from The Tales of Hans Christian Andersen. her especial favorite was a story entitled "The Snow Queen" (or maybe "The Ice Queen") about a girl who somehow gets a sliver of ice in her heart and comes under the dominion of either the Snow or Ice Queen, leaving behind all those she loves, including her best friend who lives next door and doesn't understand the change in her at first. I think he eventually does--the story is a little fuzzy in my mind at this late stage--and risks his own life to go to the Ice Queen's realm to rescue his friend. As I remember it, it is his love of his friend that melts the sliver of ice in her heart and frees her from the Ice Queen.
I think my mother read that story so often was because it was her story. I believe she was wounded somehow (the ice sliver) when she was young and she waited all her life for someone to rescue her with love and it never happened. Maybe this is all psychobabble, but that's what came to mind as I read this thread.