You can say that you're not accusing her, and you can say that you don't know what happened. The only thing you're not allowed to do, is to accuse her of making a false allegation. This means that you do believe that she is guilty, you're just not saying it (even though you are saying it), and your reason for not saying it has nothing to do with "innocent until proven guilty", or any legal principle, it's because you don't want to get banned.
This is how it is in almost all cases, people saying the things you do are full of shit. You have no qualms about accusing people of crimes they've not been convicted of. You say do you, but you lie.