It usually takes time to process this kind of shit. That’s why we’re “suddenly” hearing of celebrities doing bad stuff in the 90s or whenever.

One thing is that the person needs to be in a safe position to do it. (Many victims of harassment are still in it). Another thing is personally admitting to it happening at all. (Many victims like to not think about it all.)

Assuming that it is true, she’s actually very quick about it.