Sylvanas Windrunner: Former General of the Rangers of Silvermoon, former banshee under Arthas, current Queen of the Forsaken in the Plaguelands. On one side a cold, calculating shell of the elf that once defended Silvermoon to her last breath, on the other, a pragmatic leader simply out to carve out an existence for her and her people within the World of Warcraft.

There are many sides to this former ranger, and while debates are still active as to her true nature, we bring you a video covering another aspect to her persona. It's taken from the Burning Crusades expansion, and it's a sequence triggered after you hand over an item to Lady Sylvanas. According to poster BCthing, this emote pops up before she starts singing:

Lady Sylvanas Windrunner looks down at the discarded necklace. In her sadness, the lady incants a glamour, which beckons forth Highborne spirits. The chamber resonates with their ancient song about the Sin'dorei...