Hey, an addition is an addition. It's new to me. I'd say it actually is on Page 2, but it's all good. There's also some BE on Page 4 for interested parties.
While I'm here, I came across this student film awhile ago which is relevant to the topic. The make-up effects are really low budget and the reaction shot is almost non-existent, but it's something.
Another student film has much better make-up, but it isn't quite relevant to the topic since it implies the girl was born without a mouth to begin with, so it was never 'erased'.