The more I look at the video.

the more i come to the conclusion that at about the time she starts making hand signs, and waves her right hand into the elevator, she isnt making hand signs.

she is in fact

lifting her arms and is indeed struggling with something invisible to the naked eye.

her right hand raising up and searching is to see if anything is there she can't see, whatever (or whomever is cloaked) grabs her and takes her left out of screen.