A Court of Lies and Love

ACOTAR fanfic. When everyone else abandoned Tamlin, there exists someone who is still on his side.
Isolde, a shapeshifter from the Spring Court Forest, who grew up with Tamlin and only loved him from afar. As lesser fae, her family were persecuted by Tamlin's father, but now she found peace under Tamlin's rule... only to find it snatched away by Amarantha and-yes! Feyre.
Sworn to revenge, she infiltrates the Night Court to destroy it, as Feyre destroyed her own.
But then... she hears about Tamlin ravaging and alone, and races back. Will her love be able to save him? Or will the beast on the outside take over his inner world as well