On the topic of rape does, Tsubasa want Sensei to rape her/Niki her(reffering to Otoha cuck scene)? She keeps meddling in Sensei's affairs and when he tells her to stop she asks if there are any consequences. Could this be her pushing Sensei to the point where he gets fed up to the point where he has her way with her?
I don't think so, and there are two parts about this.
First is that, Tsubasa should be someone that needs to or tries to constantly think several steps ahead to bring any potential benefit to the people she cares, and Sensei is likely not one of them. A series of button pushing is an effort to understand where Sensei and her daughters currently are in her imaginative roadmap, what direction they might move on from there, whether she agrees with the benefits that direction could bring to her daughters or not, and whether a nudge on her end is necessary to accelerate or course-correct.
I think there is always some amount of honest excitement when dealing with Sensei due to perhaps knowing what he does with Chika, and perhaps due to natural attraction to a hot dude. But this is far from being the determining factor to her actions in the face of her duty as the puppeteer. Any attempt in explaining this otherwise as a kink or a villainous hobby is currently too weak. Even if Tsubasa herself claims to have askew moral code, I choose to believe that it's the
mean to an end that is askew and not the
end. Essentially, wanting to see something spicy or wanting some of that dick herself shouldn't be your first guess.
Second is that, according to her life trajectory and realistically speaking, Tsubasa
will not receive consequence and she herself should be the believer of that. It requires balls bigger than Selly's ego to forgo everything and pork the most influential woman in the city even at a fit of rage. It doesn't mean she has plot armor; it just means that she thinks she does, and thus there is a high chance that what ends up happening might not be exactly what she hoped for or what she seemed to be going for. And this I think is an ongoing theme that revolves around Tsubasa whenever Sensei is involved: she is not just playing with fire against her best judgement or thinking she always gets the upper hand; she is playing with fire without knowing that's a fire.
This feeling is especially strong when it comes to her plans with Tsukasa. I generally think Tsubasa may or may not fully believe Sensei's wariness about being around wizards, and is still trying her best to move Tsukasa's case forward in a good direction, but this time it's exceptionally difficult to make the right choice even for her. You might say "just find another tutor that's not a proven pedophile" and you'd be absolutely right. However, from Tsubasa's perspective, she needs someone with experience, enough intelligence, a spine that can withstand Tsukasa's BS, amongst other things that relate more to mentally growing her girls up and less to do with just education. She might believe that she can still nudge Sensei and Tsukasa into the right direction against all odds, but backfiring is very imminent and almost unavoidable only from a god's perspective.