(source for what I’m about to say: I vaguely remember basically a couple headlines)
I remember reading a statement from Lewinsky regarding that allegation. Something along the lines of her agreeing that, while she had for many years defended him and declared to anyone asking that their involvement was purely consensual, she didn’t really have the power to consent. I believe it was referenced how the enlightenment of the recent Me Too revelations had influenced her evolving understanding.