One of the top comments on the video reads:

"1:24 pause the video, paine has 2 mouths, the other on her neck. guess its not complete yet LOL"

Yes, I had to admit that Paine having two mouths in that one shot was kind of funny and I am surprised that it got through to the trailer. Though, does anyone want to look to make sure that's not a trick of the lighting or something like that?