She came to Canterlot to obtain their magic for the Storm King and nearly succeeded in doing so. However, thanks to Twilight, Tempest Shadow has a change of heart and turns the Alicorn Princesses back to normal. As the four alicorns embrace in a group hug, Tempest comes to realize that there is more to the alicorns than just their magic.
Maybe Twilight can introduce Tempest to Flurry Heart.
You need a proofreader/editor to go through this with you.