As mentioned before, the song above gives the story of Turin Turinbar from the Silmarillion. The 'she' referred to is his sister, Nienor Nieniel, who he also marries. He does not realize she is related to him when he finds her alone and without her memory in the forest one autumn, which is why he marries her. She had lost her memory because of a dragon's spell.
When she regains her memory, Turin is laying passed out from the dragon's poison (same as the one who took her memory) the spell is broken, she realizes what she has done and throws herself into a waterfall. (Seal of oblivion is broken, and a pure love's been turned into sin)
The entire song is given from Turin's perspective, reflecting on what he has learned to be the truth before he falls on his own sword and commits suicide.
As mentioned before, the song above gives the story of Turin Turinbar from the Silmarillion. The 'she' referred to is his sister, Nienor Nieniel, who he also marries. He does not realize she is related to him when he finds her alone and without her memory in the forest one autumn, which is why he marries her. She had lost her memory because of a dragon's spell.
When she regains her memory, Turin is laying passed out from the dragon's poison (same as the one who took her memory) the spell is broken, she realizes what she has done and throws herself into a waterfall. (Seal of oblivion is broken, and a pure love's been turned into sin)
The entire song is given from Turin's perspective, reflecting on what he has learned to be the truth before he falls on his own sword and commits suicide.