To add the female perspective...
It is possible that she didn't want it to be true as much as y'all don't want it to be true, so she took him stopping as an apology and wanted things to go back to the way they were. It was when he did it again that she realized that it was not a fluke and he was serious. By choosing to sit next to him, she probably was trying to salvage the friendship & let him save face.
A lot of times, us women give y'all way too many chances and *we* in the end get burned for it.
For the record, I believe that accusations like these need to keep coming out so that everyone can get educated on what the word "No" means and the appropriate actions to be taken after you hear it and after you say it.
Also, I believe that secrecy around things like this has caused women not to be educated about what to do in situations like this. This will be a very tricky time for the next couple of years while we figure out new norms and ways of being sexually together, but it will be worth it, if more little girls and young women start to get tools to respect their gut feelings, voice their uneasiness with situations and stop feeling like they have to please others to be accepted.