I think it wasn't staged because you can't stage a laugh like that. I know when im really nervice that if i start to laugh
i get just like her and maybe the moment needed a good laugh to settle her down.My husband and I sang for a friends son's wedding and we bought a gage ring the size of an golfball for the grooms brother who was best man to give him when the preacher asked for the ring.He gave it to him and the whole church cracked up but it was just the thing to break the stress that our friends son had. He was so nervice he was shacking.They said it was the best thing they needed.I also laugh if i get real scared and dont know what to do.This has happend only twice in 62yrs.