Sandra chucked as he told his story about Battle city. She had not personally visited the battle city tapes since during that time her studies in America had kept her busy. So this ''Mark Ishtar'' guy was unknown to her. So she took a feisty sandwich and soda with a good and light feeling in side of her...that got dashed as she was told about the comatose of some of the participants. That was indeed something quite creepy...but duelling using the duel disk system had reported damage by the placebo effect (if you think its going to hurt you it did). That could have been a likely cause...if a big enough thing hit you perhaps your body went whack. She started to munch on her bacon and ham ''kill your heart by cholesterol'' sandwich. As soon as she shallowed she said
[I]''Back in the USA all the kids ate these. Tastes like sin on a bum''[/I] She pooped her soda and took a chunk before continuing on her last dialogue with Lyall
[I]''Well if you ask me shadow duelling sounds quite exhilarating. And since apparently we are all stuck in them how about you and i finish this meal and have one of these...''[/I] She makes joke motions with her hands
[I]''...Shadow duels?''[/I] 

Clearly she would call his bluff, they would play, she would win, nothing will happen and then he will learn not to trust everything he sees on TV.