Usually I feel a twisted sense of admiration for the girls in these stories, e.g. "Okaeri, Papa" and the one with the twin love interest that had the insane sister (title escapes me because the last update was months ago), but I just see this girl as an absolute menace.
Probably because in those stories, the girls are acting in retaliation despite it being part of their plan/overreacting. This girl is actively ruining the lives of her family for her personal benefit, and that's not kawaii at all.
(Edit: Kimi Dake ga Hontou. That was the title of the twin love interest with the twisted sister)