>>111933483So based on what I read here and on tumblr I think it would be better to leave the first idea and a corrected ending.
Elsa freezes to death, dam is broken, water is going to Arendelle. Snowflake with FIVE elements appears and the water is lower and lower, ruining the castle only.
Forest is free, Anna sees the snowflake, but just Olaf returns. She makes him arms-nose etc., he says "Water have memory".
Christof comes and says "I understand it is not the time but would you marry me... some day?", shows the ring, she does not answer but hug him.
Arendelle. Several weeks later, everybody helps rebuilding the castle, still sad Anna is crowned in a tent, scene with Kristoff (and she has the ring, yes), scene with Matthias and statues of Agnarr and Iduna. Gale comes and likes Iduna. Anna says "If only Elsa could see it"
Ahtohollan. Memories flashback about Anna starting from the newborn Anna, like Angarr's voice "Elsa, this is Anna, your sister and best friend forever - Hi Anna" Anna catches her finger, Iduna and Elsa laughing, several scenes, ending with "I promise" from the mist parting scene and the light through the ice: Elsa starts seeing.
Arendelle. Suddenly 5-spirit-snowflake appears again, everybody runs to the port pointing to something and giving Anna the way. It is Elsa riding the Nokk, she comes, sees Anna already in tiara and says as Anna always said "Sorry, I'm late".
Tears, the dialog "I thought I lost you" - "You saved me". Explaining that spirits decided for Arendelle as a kingdom, every bridge has two sides, mother has two daughters. Elsa builds a small ice bridge for a new castle.
Scene with Kristoff:"Or something".
Scene with Honeymaren, who with Ryder and Yelana were invited to the coronation: "You belongs to us".
Anna: "But not today, it is Friday and it means" - Anna and Elsa together "Charades!" Hugs, Everybody is happy, trolls are happy, Olaf is happy, Kristoff and Sven are happy for Elsa. Bumping heads as End Scene.
