As Elsa sobs, grieving for her sister, Anna begins to thaw. Her decision to sacrifice herself to save her sister was an act of true love.
Realizing love is the key to controlling her powers, Elsa is able to thaw the kingdom, even ensuring Olaf won't melt in the summer heat. Hans is sent back to the Southern Isles to face punishment for his crimes, and Elsa cuts off trade with Weselton. Anna and Kristoff share a kiss, and the two sisters reconcile, with Elsa promising to never shut the castle gates again.
FACT: As kindly shared by the UK DisneyBrit podcast team - Frozen is the first Disney Classic film to feature and create TWO Disney Princesses.