Sirens, (or mermaids, who are really the same) always carry the overtones of leading the listener to death, no fault of theirs maybe. And in real life, the same of course applies to moths who follow flames instead of the moon (which I believe is what they are supposed to be aiming for). The calling and the light in Jeri's song is surely somebody calling a loved one home, though the singer isn't part of it.

If I was writing that verse I think it'd be more like this:

Your love is a lighted window in the wild,
I hear you calling, far away, but strong.
I stand apart, on hushed and shadowed path,
And yearn to join the vision or the song.

For anyone who is interested in the idea of using Greek mythology in song, I'd strongly recommend getting hold of one of Anne Lister's records.