You reincarnated As a countess whose powers are weak and sufficient for protection only. In a novel, I became the Male lad's wife , you met the hero Siegren and the Villainss Fiona when they were children, and now you are trying to change Fiona's fate. So, she does not die

Duchy of Helion

Inside the palace of the Duke of North Abel

The Duke looks at you with a cold look as he sees the two children (Fiona and Siergen) holding your hand