Ryuuji called her out on it in chapter 6. If he thought driving people away was what she really wanted, there would be no reason to point it out, IMO. Koneko said it straight out in chapter 43. And Rin, the way he acts towards her looks like he understands. He always look right past her antics and thanks her for washing his shirt or trying to cheer him up. ... Actually, Renzou is the only one I wasn't sure about. He was acting like, he liked her that way (while she was doing everything she could to make him not like her). Yukio is smart. He probably recognize a tsundere when he sees one.
I think Bon said it with more intention to hurt her (they were angry at each other) than to call her up.
As for Koneko, he was calling everyone out, I don't think he did it with any particular intention of her becoming closer, it was more along the line of "be professional".
Rin is really interested to grow closer to Izumo, as a friend at least. He did use to think bad of her because of how she treated Shiemi but after seeing her cry he saw her other side and since the "train chat" he got even more of an interest in socializing with her (and I guess now even more after learning about her past).
Don't bring
the backstabber up.
I'm not sure Yukio is that interested in Izumo, even less now with all his personal drama. He will probably at least try to give her kidnap a more "business approach".