Kinda likes tsundere, but not quite...
ik,r? But why not? I can't quite put my finger on it.
I feel like the sausage thing ("I'm doing this nice thing for you, but only as a way to put you down") comes closest to the "in denial" aspect of the tsundere.
I wouldn't object to the Tsundere tag here, but it still feels, as you say, "not quite" . . .
I think she's a bit too willing to actually act on her feelings, even while trying to frame them as bullying, to come off as tsun. Or, perhaps more accurately, a being a tsundere generally implies some degree of self denial, while she seems to fully acknowledge her own feelings, but still wants to present herself as tough and aloof.
It's the difference between "It's not like I love you ... Baka!" and "I love you, baka."