Angus and Jayna know this is the first time Anna meets Madam Malkin and the Queen. So, they are confused at Anna's aggressive reaction.
Even when meeting King Leon, Jade, or other strong monsters, she never shows this kind of aggressive behavior. At most, she will only stay silent, trying to hide her presence as much as possible.
"They didn't deserve to be bursted. The disgusting old bubble even looks more monster than monster. Anna can't believe there is such a bubble in this world. The other red-haired old bubble is still bearable but not too much different." replied Anna while still pouting.
"Hmm… What happens when you kill them and not burst them?" asked Angus.
"They will die." replied Anna like it was an obvious answer.
"I know that. I mean, what's the difference between bursting them?" asked Angus again while scratching his head from Anna's answer.