Half- Shadowsinger (ACOTAR Cassian Love story)

THIS IS GOING TO BE A LITTLE DIFFERENT THAN THE BOOKS. I MIGHT ACCIDENTALLY SKIP SOME. AND I MAY SKIP SOME BECAUSE THATS THE ONLY WAY IT'LL FIT WITHOUT MAKING IT FEYRES STORY

Spirit is Feyre's twin sister. Spirit is extremely odd and her village and father all look down on her except for Feyre, Ellain, and Nesta. Their father hates her and constantly kicks her outside in the she's behind the cottage.
When Spirit and Feyre get back from a hunt after killing a huge Wolf and a huge Panther. They carry a die and buck each. What happens when a faerie comes and makes them come to Prythian? And Spirit finds out why her village and father, besides her sisters, hate her? What if she has to stay in Prythian when her sister is forced to leave? What happens when she gets taken to Under The Mountain with The Spring Court?

Book starts when they get taken my Tamlin then when they get taken to Under The Mountain.