During the song, she gives herself permission to be who she is and everything changes—her hair is more wild, her gown is magical.
She walks into Storybrooke searching for Anna.
Namely, she said, they were both very powerful and very misunderstood individuals.
According to Menzel, she was originally scripted as a one-dimensional antagonist but was gradually revised as a more vulnerable, multifaceted figure.
Afterwards, Anna tells a now bedridden Elsa that she has given her the best birthday ever: letting her take care of her.
Summer returns to Arendelle, Elsa regains the throne and is able to use and safely control her powers, while the sisters' bond is restored.