Who said that cats do not laugh?
They laugh! But, like true cynics and egoists, they do it so that we humans do not notice it. If there is a cat in the house, you should watch youe pet more closely.
It’s unclear what she does not like, so it’s hard to explain such a reaction. In any case, these sounds are quite atypical. And if you also pay attention to her eyes, it becomes quite creepy. Homeland of Siamese cats is Thailand. There, this breed was previously considered sacred, it was respected in temples and guarded by law. But with this cat it’s definitely not so simple.