Fana: "what do you call this tanoomba"
I don't have to call it anything, she already addressed it:
Sulkowicz: "I haven't faced him since he assaulted me, and I want to talk with him about what happened. I try to say this in a friendly tone, so that he doesn't get scared. I don't want him to avoid the conversation. I'm being irrational, thinking that talking with him would help me."
See what this does? This creates an alternate, completely feasible explanation of that exchange besides "She's trying to hook up with him and he's rejecting her." This creates reasonable doubt against accusations that she is lying about being raped.
Alkorin: "Moon Bat, it's not feels. It's logic. She is, at the moment, unable to prove her case, but she sure is VERY VERY LOUD and being very cruel to that poor mattress. If she's being so goddamned loud about her case, she should probably have some evidence to back it up. Does that mean she wasn't raped? No. It just means she has made an accusation that she can't back up, and that usually doesn't end well for an accuser."
She was an art student, you tool. She (supposedly) felt frustrated about how the school handled the case, and instead of just letting it go she (supposedly) turned her experience into performance art. She had been talking with a professor about other artists who performed "endurance art" (WAY crazier stuff than what she did) and, inspired by their work, decided that the best way to get her message across was by transforming the metaphorical burden all rape victims carry into a literal one, represented by the same type of mattress she (supposedly) was raped on.
You're right, though, she made an accusation she can't back up. That doesn't mean she was lying, and assuming it does is, by necessity, based on feels. Which is fine. You're all allowed to believe she's a lying, vindictive bitch. Just don't fucking pretend it's not based on "feels" when it very clearly is. If it wasn't she would be getting sued as we speak.