What strikes me as odd is that no other employee at LMG has come out with allegations of this kind of environment. With the number of staff they have right now and even more people who don't work there anymore, surely someone else would step forward if it was this bad? The crunch and overwork is confirmed of course, but the illegal stuff like sexual harassment and breach of contract seems like it would have multiple people blowing whistles if not filing lawsuits.
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.