Re: Female Rock Voices.
I really like Simone from Epica as well,
My favourite female vocalist in rock/metal is probably Lisa Johannson of Draconian. She has such a sweet soprano and the band work her voice into the melody of the music perfectly. Her voice is also set off perfectly by the stark contrast with Anders harsh vocals.
Another favourite is Liv Kristine, she kind of sings pop now but she had a lovely muted soprano in early Theatre of Tragedy and Leave's Eyes is great folky, melodic rock.
A disquiet mind at therapy with the music.