Fake. It's obvious that the woman is just opening her mouth to the backing track.

Dear sir, the woman might not even be doing that.
In the video, I am GROWLING, yes, you are not mistaken. You can clearly hear two vocals - mine and the original recording (Tent - In Crimson Tones, you can even compare, the scream is dry and sounds like a whisper, mine has much less of a transition between the growl and the scream, yes, unfortunately, it's not a minus track). We recorded it spontaneously at home, we turned on the song on the computer, and filmed it with a professional camera.