Did he take the plastic off in front of her? They probably just opened it beforehand and retightened it.
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I didn’t see it and don’t care to as it proves nothing... even if sealed with a plastic shrink wrap on the cap it can be easily opened just by lightly heating it to lessen the vacuum. Everything is slight of hand ... think of picking a number out of a hat... to “mark” the slip the magician wants pulled they cool it so that it stands out but in a way that disappears quickly.