content: She's drugged up pre (or post) surgery and is playing Pacman with her hand.  Then, due to the drugs, she can't figure out how Pacman is going to escape the "ghost" which causes her to start to panic.  You can hear when she starts to lose it and that is when the (I'm assuming) nurse shows her how Pacman will turn to avoid the "ghost."  General anesthetics really mess with your head.