Go out from the Sites of Grace - Across the Roots, find and defeat the boss - Fia's Champion.

Fia's Champion - Elden Ring Raiders

Boss - Sorcerer Rogier.

Boss - Fia's Champion, boss - Fia's Champion, boss - Lionel the Lionhearted.

Get the Fia's Mist after defeating enemies.

Talk to Fia and choose - No,I want to be held.

Sites of Grace - Prince of Death's Throne.