basically the story would start when MC(F for me as all my MC are female) looked at say a standing stone or some other perhaps place of power at dusk on the first day of spring and happened to see groups of faerie folk celebrating the coming of spring. This event changes her world..
thoughts as i type this..
lots of people look at 'monuments of power' at dusk on any day.. why this person... perhaps she was also on the brink of coming into magical power
i think she becomes.. bound.. to the faeries in a twisted sort of way....