TW for the Sirion kinslaying and Elwing's attemped suicide
Elwing's advisors encourage her to be strong, not to give the Silmaril to the Feanorian murderers. Of course, none of them know that she couldn't hand it over, even if she wanted to. She tries not to think about what would happen if the Feanorians saw the empty shell of the Silmaril, drained of light. She tries not to think about what they might do to Earendil, if they found out the light lives within him now.
She doesn't really have any options. She cannot give them the Silmaril; she will not yield her husband to the monsters who killed her parents. She encourages Earendil to go on another of his voyages. She tells him that she's confident the Feanorians won't have the guts to actually attack them. She's lying. The day after he leaves, she makes plans to evacuate all those in Sirion who aren't ready and willing to die there.
Not long after, she receives another letter, one that practically radiates anger. That night, she holds her children– her wonderful, sweet children who have feathers behind their ears and starlight at their fingertips. The next day, she plans to have them sent away from Sirion. She knows it won't be long now.
She's still not ready, when the Feanorians come. There aren't many people left in Sirion. There aren't many Feanorians left either. But the fighting is fierce, all old hatred and festering pain. She'd hoped to have another day– just one more, to hide the remnants of the Silmaril. When Maedhros sees her carrying the cracked orb, wrapped in fabric, she knows it's over.
Maybe he can tell, even through the fabric, that something is wrong with the Silmaril, maybe he can't. Either way, he runs after her with burning eyes and a his oath on his lips. She's not quite sure where her feet are taking her until she finds herself at the cliff's edge. She turns, stares out at the stormy sea. When she looks back, there is something almost like horror on Maedhros's face, but all she feels in an eerie calm.
She thinks about her children. She hopes they made it out alright. She hopes they'll find someone else to look after them, when she's gone.