The third point of view:
They said a pest is a destructive
destructive insect or animal that attacks crops, food, livestock. But in this case, Isabella could finally conclude that a pest was an unwanted, bothersome, annoying human that refused to die.
She was extremely relieved by the news that the "problem" aka Jacqueline has been taken care of. Thankfully, her siblings had done so without her taking care of the woman in her own special way. Now, she could relax without any one forcing her to follow bunch of stupid etiquette.
Honestly, Isabella could have endured the training and saw this to the end, but Jacqueline irritated her. She couldn't explain it but the woman's arrogance just irritated her. She - Isabella - was not a lab mouse nor object she - Jacqueline - could shape into whatever she wanted.
