So, I (20F) have this friend Rachel (17F) who has been dating her boyfriend for over a year now. At first, everything seemed chill—she’s always super bubbly and friendly to everyone, calling every girl she meets her “best friend” (even ones she clearly can’t stand), and playing the “sweet supportive girlfriend” role in public.

But behind the scenes? It’s a whole different story—especially when it comes to her boyfriend’s younger sister Kayla (15F). Kayla is literally just a normal teenage girl. She likes TikTok, makeup, clothes, and is honestly pretty quiet and sweet. But for whatever reason, Rachel has become obsessed with the idea that Kayla is “copying” her.

And I’m not exaggerating—Rachel brings it up constantly. “She bought the same sneakers as me.” “She started doing her eyeliner like mine.” “She posted a video with the same sound I used two days ago.” Half the time it’s a stretch, the other half it’s literally just a trend.

Now here’s where it gets worse: Rachel doesn’t confront Kayla directly. Instead, she’s been posting these super frequent, indirect TikToks clearly aimed at her. Stuff like lip-syncs to shady audios (“it’s giving obsessed,” “I’m the blueprint,” “don’t copy, create”), vague captions like “can’t even have an original thought anymore lol,” and aesthetic videos that seem innocent… until you notice they subtly reference stuff Kayla just posted.

She’s never @-ing anyone, but the timing is too perfect and the patterns are obvious. And because Rachel’s followers include her boyfriend’s family and friends, it’s becoming noticeably uncomfortable. Kayla hasn’t said anything (probably because she’s trying not to cause drama), but you can tell it’s getting to her. She’s posting less, and she recently deleted a bunch of her older TikToks.

So I finally snapped. I texted Rachel and said, “You’re seriously making multiple TikToks a week aimed at a 15-year-old girl and then turning around and calling her your ‘little bestie’ in public. It’s giving mean girl energy, not influencer vibes. Let it go.”

She blew up. Said I was “taking Kayla’s side,” that I don’t know how it feels to be “constantly copied and shadowed,” and that I “embarrassed” her by confronting her instead of just being supportive.

Now a couple of our mutuals are saying I should’ve kept it to myself, that it’s “sibling-adjacent drama,” and not my place to get involved. But like… Rachel is 17, Kayla is 15, and Rachel is the one with a public platform and older friends encouraging her behavior.

So now I’m wondering: AITA for calling her out and telling her to stop being passive-aggressive toward a literal child?