After the horrifying events and Argyle possibly passing because he never came back, Sunny was advised by Phyllis to be housebound until things were safe again. As she's not allowed to venture by herself because of "rumors" of Pegasi, unicorns, and an alicorn around and that she could be killed just like her father. Despite all of it, Sunny has hope of bringing back unity and everyone becoming friends again. Some bad apples aren't going to convince Sunny to be fearful of other ponies just like all of Maretime Bay.

Her song:

You're okay
You're alright
I'll never, ever loose our hope.
I will help, reunite
All of you.

Aah aah aah
Aah aah aah

You're okay
You're alright
I wish this with all my might
Our dream, our wish
Will come true.

(I modified the lyrics to fit the narrative of my universe but it's heavily inspired by the Cover)

Sort of based off of this:

https://youtu.be/kZwbmJOxY4k

Original song from Centarworld:

https://youtu.be/lwwjjWPgTE4