I read this chapter ahead using another language but yeah, I barely feel bad for the girl at this point.
Yes, her mom is shitty and domineering and that’s probably why she is so shitty herself but she literally doubled down with her plan and failed both times. The Yandere just did the same thing but way more efficiently.
Only thing that really worries me is if the Yandere sees her dad on the video, that might trouble him since it’s the rumor she just made up, and she may even go full psycho on the girl…