Lilith: You killed my Disciples. I killed your knights. I’ve come to see if you’d like to cut your losses.

Seelie Queen: I’m sorry for your pain, but I never ordered anyone to do harm to your people.

Lilith: Not directly, as always. But I don’t have time for sleights of tongue. The vampire with the mark. You gave it to him because it’s the only thing that can banish me. I want you to remove it.

Seelie Queen: I gave him the mark because he’s a Daylighter. Seelies have always been the protectors of anything in nature that’s special and unique.

Lilith: My son is special and unique. And I am his protector. The Mark of Cain. I want it gone.

Seelie Queen: There are certain things that I, too, want gone. Sadly, we don’t always get what we want.

From Shadowhunters – Season 3 Episode 8: ‘A Heart of Darkness’ (3×08)