Frostbitten Scars (Jack x Elsa)

Jack stumbles upon Elsa's and Anna's last moment as sisters- and decides to put off everything to help this grief, fear stricken little girl with powers much like his own. As he helps her grow to a pre-teen, everything turns out for the worst. Elsa runs, Parents die, and Anna cries. Years have passed and Jack still yearns for his princess. When a rumor comes up about the Snow Queen of Arendale, he becomes intrigued. Is this is Princess? Could his heart thaw once more?