Given that the visuals seem to be implying the sister and the rest of the family might be the reason she's like this in the first place, I don't think the sister should be anywhere near an intervention for her
Angel Densetsu the GOAT, of course
Natsume & Natsume
Another Typical Fantasy Romance (free on Webtoon)
Kawaii Hito
The Fragrant Flower Blooms with Dignity
Saw the (untranslated) furious sound effects near her phone on the last page and just assumed it was typing. Rui did just call her cute and it seems like everyone contacts someone who'll cause problems whenever something like that happens.
I'm really sorry to say this, but this is not against the rules. Attempting to report this chapter or group will do nothing except give the mods reasons to take away your reporting privileges