Acolyte
This unnamed mortal is an acolyte of the Children of the Blessed preaching in the square of Feyre's Village.
The acolyte works the market square on behalf of the Children of the Blessed, trying to win converts among the villagers gathered there. Her chief recruiting tool is an account of a friend who now lives in luxury as the bride of a High Fae, offered as proof of the rewards waiting for anyone who joins the order.
The village does not receive her kindly. Feyre and her sisters are in the square when she preaches, and Nesta and Elain answer her with open hostility; other villagers treat her the same way. Through all of it she stays serene, keeping to her message despite the reception.
How far into A Court of Thorns and Roses have you read?
Set your place and this page rewrites itself to exactly that point. Nothing ahead of you will show.