Henrietta and Astoria couldn't change the fact that they had indeed hooked up with Victoria's grandson and already felt awkward and embarrassed about it. As such, it would have been fine if Victoria had just been considerate about their feelings.
However, not only did Victoria not consider their feelings, she was even making fun of them for her own amusement, finding pleasure in their plight.
How could their pride accept that?
"Victoria, we indeed have a relationship with Vaan, but that also doesn't change the fact that we are your peers. Stop trying to climb two generations over our heads," Astoria said in a displeased tone.
"Hahaha, what's wrong with that? I am indeed two generations ahead of you two," Victoria chuckled and said, "I've already had children and grandchildren, while you two have none. My springtime is long gone, but yours have only just begun."