Now that you mention it, I don't think I've ever seen Silver apologizing whenever she got involved in shit like the interview where she presumably threw shit at Hololive. Hell, not even the Nux drama could squeeze one out of her, and pretty much everyone else including pink cat bit the bullet and posted an apology (Except Hajime I think but she pretty much stayed out of it the whole time so it makes sense). Her approach to this sort of thing seems to be mostly to fuck off the face of the earth for a few days and hope the internet's collective goldfish memory lets her sweep the whole thing under the rug. So either she's much more stubborn and selfish than the other girls, even pink cat, or she's legitimately too damn dumb to realize she's shooting herself in the foot with a 12 gauge right now.
Then again, I can't recall the last time Silver actually collabed or did anything with the other girls so there might be more than just a few disagreements going on behind the scenes. Combine that with the fact Silver is the lowest-performing member of the group and I wouldn't be suprised if both them and management secretly want to give her the boot but haven't been able to due to legal reason or a contract. For all we know, the girls probably didn't warn her or even encouraged her to play the Harry Potter game just so they could have an excuse to alienate her and make her quit the group of her own free will.