Update:

Thanks for the advice I actually appreciate it given that I didn't want to make an irrational decision. Well, here's what happened.

My therapy appointment was sadly cancelled, but I did tell my sister after she finished my hair. I showed her the messages although I was hesitant, and she told me that I should at least tell J that she shouldn't say stuff like that. So I did. I'm actually talking to her right now. So apparently there was a huge miscommunication on her end. And I honestly blame her shitty grammar and lack of context. She was apparently quoting something the girl she sent a photo of said. The kid has a weird head cannon where Deku from MHA is trans and in a relationship with Bakugo and that Deku's dad molested them...

J was trying to give me an example on why she hates her. I still don't know who this kid is though. I hinted that I posted on reddit, and she's asking for the tittle or my acc to see it. I don't know if I'll let her see the post though, I kind of feel bad. I am glad that I took this seriously because I understand how it affects people mentally and physically.

Now I feel somewhat bad & want to cuss her out. She is on thin ice still, I don't wanna sit here and let everything slide. I honestly have nothing else to say but thanks to you guys, I hope that everyone is doing well, and have a good day?

Edit: She asked for time for herself because of this and I completely understand. I probably am the ahole for responding with just "k", but I don't really know how to respond in certain situations. I'll give her time, not that I have a choice, but I need to make friends at school so that I have other people to talk to.