bpt – Fighting them won’t help, perhaps talking or pleading.
Also Charlie is wrong. While technically a woman can’t be an “Aid”, the Bais Din isn’t calling her as one. And as far as the yeshiva, they didn’t just rely on her statement, the Bochur admitted it!
I don’t know what yeshivos you went to, but most that I know would/do chuck on a first offense, if it was serious enough!