So.... You live on an island with fae spirits, you and your sister have the same mystery dad, your mother is a devotee of the fae spirits, she won't tell you who your dad is, the previous bard saw and sang to these fae spirits and she was confident that you would be perfect to become the next bard... Jack I think you're half faery. 😯
Also, maybe they are taking girls because they are looking for Frey 😬